[PATCH v3 6/6] drm/sprd: add Unisoc's drm mipi dsi&dphy driver

Kevin Tang
2021-01-05T13:48:01Z

Adds dsi host controller support for the Unisoc's display subsystem.
Adds dsi phy support for the Unisoc's display subsystem.
Only MIPI DSI Displays supported, DP/TV/HMDI will be support
in the feature.

v1:
- Remove dphy and dsi graph binding, merge the dphy driver into the dsi.

v2:
- Use drm_xxx to replace all DRM_XXX.
- Use kzalloc to replace devm_kzalloc for sprd_dsi structure init.
---
drivers/gpu/drm/sprd/Makefile | 7 +-
drivers/gpu/drm/sprd/dw_dsi_ctrl.c | 794 +++++++++++++++++
drivers/gpu/drm/sprd/dw_dsi_ctrl.h | 1475 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.c | 157 ++++
drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.h | 26 +
drivers/gpu/drm/sprd/megacores_pll.c | 317 +++++++
drivers/gpu/drm/sprd/megacores_pll.h | 146 ++++
drivers/gpu/drm/sprd/sprd_drm.c | 1 +
drivers/gpu/drm/sprd/sprd_drm.h | 1 +
drivers/gpu/drm/sprd/sprd_dsi.c | 1162 +++++++++++++++++++++++++
drivers/gpu/drm/sprd/sprd_dsi.h | 107 +++
11 files changed, 4191 insertions(+), 2 deletions(-)
create mode 100644 drivers/gpu/drm/sprd/dw_dsi_ctrl.c
create mode 100644 drivers/gpu/drm/sprd/dw_dsi_ctrl.h
create mode 100644 drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.c
create mode 100644 drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.h
create mode 100644 drivers/gpu/drm/sprd/megacores_pll.c
create mode 100644 drivers/gpu/drm/sprd/megacores_pll.h
create mode 100644 drivers/gpu/drm/sprd/sprd_dsi.c
create mode 100644 drivers/gpu/drm/sprd/sprd_dsi.h

diff --git a/drivers/gpu/drm/sprd/Makefile b/drivers/gpu/drm/sprd/Makefile
index 6c25bfa..d49f497 100644
--- a/drivers/gpu/drm/sprd/Makefile
+++ b/drivers/gpu/drm/sprd/Makefile
@@ -1,5 +1,8 @@
# SPDX-License-Identifier: GPL-2.0

obj-y := sprd_drm.o \
- sprd_dpu.o
-
+ sprd_dpu.o \
+ sprd_dsi.o \
+ dw_dsi_ctrl.o \
+ dw_dsi_ctrl_ppi.o \
+ megacores_pll.o
diff --git a/drivers/gpu/drm/sprd/dw_dsi_ctrl.c b/drivers/gpu/drm/sprd/dw_dsi_ctrl.c
new file mode 100644
index 0000000..1034aba
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dw_dsi_ctrl.c
@@ -0,0 +1,794 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include "dw_dsi_ctrl.h"
+
+/*
+ * Modify power status of DSI Host core
+ */
+void dsi_power_enable(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(enable, &reg->SOFT_RESET);
+}
+/*
+ * Enable/disable DPI video mode
+ */
+void dsi_video_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(0, &reg->DSI_MODE_CFG);
+}
+/*
+ * Enable command mode (Generic interface)
+ */
+void dsi_cmd_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(1, &reg->DSI_MODE_CFG);
+}
+
+bool dsi_is_cmd_mode(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ return readl(&reg->DSI_MODE_CFG);
+}
+/*
+ * Configure the read back virtual channel for the generic interface
+ */
+void dsi_rx_vcid(struct dsi_context *ctx, u8 vc)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x1C virtual_channel_id;
+
+ virtual_channel_id.val = readl(&reg->VIRTUAL_CHANNEL_ID);
+ virtual_channel_id.bits.gen_rx_vcid = vc;
+
+ writel(virtual_channel_id.val, &reg->VIRTUAL_CHANNEL_ID);
+}
+/*
+ * Write the DPI video virtual channel destination
+ */
+void dsi_video_vcid(struct dsi_context *ctx, u8 vc)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x1C virtual_channel_id;
+
+ virtual_channel_id.val = readl(&reg->VIRTUAL_CHANNEL_ID);
+ virtual_channel_id.bits.video_pkt_vcid = vc;
+
+ writel(virtual_channel_id.val, &reg->VIRTUAL_CHANNEL_ID);
+}
+/*
+ * Set DPI video mode type (burst/non-burst - with sync pulses or events)
+ */
+void dsi_dpi_video_burst_mode(struct dsi_context *ctx, int mode)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(&reg->VID_MODE_CFG);
+ vid_mode_cfg.bits.vid_mode_type = mode;
+
+ writel(vid_mode_cfg.val, &reg->VID_MODE_CFG);
+}
+/*
+ * Set DPI video color coding
+ */
+void dsi_dpi_color_coding(struct dsi_context *ctx, int coding)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x20 dpi_video_format;
+
+ dpi_video_format.val = readl(&reg->DPI_VIDEO_FORMAT);
+ dpi_video_format.bits.dpi_video_mode_format = coding;
+
+ writel(dpi_video_format.val, &reg->DPI_VIDEO_FORMAT);
+}
+/*
+ * Configure the Horizontal Line time
+ * param "byte_cycle" taken to transmit the total of the horizontal line
+ */
+void dsi_dpi_hline_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x2C video_line_time;
+
+ video_line_time.val = readl(&reg->VIDEO_LINE_TIME);
+ video_line_time.bits.video_line_time = byte_cycle;
+
+ writel(video_line_time.val, &reg->VIDEO_LINE_TIME);
+}
+/*
+ * Configure the Horizontal back porch time
+ * param "byte_cycle" taken to transmit the horizontal back porch
+ */
+void dsi_dpi_hbp_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x28 video_line_hblk_time;
+
+ video_line_hblk_time.val = readl(&reg->VIDEO_LINE_HBLK_TIME);
+ video_line_hblk_time.bits.video_line_hbp_time = byte_cycle;
+
+ writel(video_line_hblk_time.val, &reg->VIDEO_LINE_HBLK_TIME);
+}
+/*
+ * Configure the Horizontal sync time,
+ * param "byte_cycle" taken to transmit the horizontal sync
+ */
+void dsi_dpi_hsync_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x28 video_line_hblk_time;
+
+ video_line_hblk_time.val = readl(&reg->VIDEO_LINE_HBLK_TIME);
+ video_line_hblk_time.bits.video_line_hsa_time = byte_cycle;
+
+ writel(video_line_hblk_time.val, &reg->VIDEO_LINE_HBLK_TIME);
+}
+/*
+ * Configure the vertical active lines of the video stream
+ */
+void dsi_dpi_vact(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x34 video_active_lines;
+
+ video_active_lines.val = readl(&reg->VIDEO_VACTIVE_LINES);
+ video_active_lines.bits.vactive_lines = lines;
+
+ writel(video_active_lines.val, &reg->VIDEO_VACTIVE_LINES);
+}
+
+void dsi_dpi_vfp(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(&reg->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vfp_lines = lines;
+
+ writel(video_vblk_lines.val, &reg->VIDEO_VBLK_LINES);
+}
+
+void dsi_dpi_vbp(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(&reg->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vbp_lines = lines;
+
+ writel(video_vblk_lines.val, &reg->VIDEO_VBLK_LINES);
+}
+
+void dsi_dpi_vsync(struct dsi_context *ctx, u16 lines)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x30 video_vblk_lines;
+
+ video_vblk_lines.val = readl(&reg->VIDEO_VBLK_LINES);
+ video_vblk_lines.bits.vsa_lines = lines;
+
+ writel(video_vblk_lines.val, &reg->VIDEO_VBLK_LINES);
+}
+
+void dsi_dpi_hporch_lp_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(&reg->VID_MODE_CFG);
+
+ vid_mode_cfg.bits.lp_hfp_en = enable;
+ vid_mode_cfg.bits.lp_hbp_en = enable;
+
+ writel(vid_mode_cfg.val, &reg->VID_MODE_CFG);
+}
+/*
+ * Enable return to low power mode inside vertical active lines periods when
+ * timing allows
+ */
+void dsi_dpi_vporch_lp_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(&reg->VID_MODE_CFG);
+
+ vid_mode_cfg.bits.lp_vact_en = enable;
+ vid_mode_cfg.bits.lp_vfp_en = enable;
+ vid_mode_cfg.bits.lp_vbp_en = enable;
+ vid_mode_cfg.bits.lp_vsa_en = enable;
+
+ writel(vid_mode_cfg.val, &reg->VID_MODE_CFG);
+}
+/*
+ * Enable FRAME BTA ACK
+ */
+void dsi_dpi_frame_ack_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(&reg->VID_MODE_CFG);
+ vid_mode_cfg.bits.frame_bta_ack_en = enable;
+
+ writel(vid_mode_cfg.val, &reg->VID_MODE_CFG);
+}
+/*
+ * Write no of chunks to core - taken into consideration only when multi packet
+ * is enabled
+ */
+void dsi_dpi_chunk_num(struct dsi_context *ctx, u16 num)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x24 video_pkt_config;
+
+ video_pkt_config.val = readl(&reg->VIDEO_PKT_CONFIG);
+ video_pkt_config.bits.video_line_chunk_num = num;
+
+ writel(video_pkt_config.val, &reg->VIDEO_PKT_CONFIG);
+}
+/*
+ * Write the null packet size - will only be taken into account when null
+ * packets are enabled.
+ */
+void dsi_dpi_null_packet_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xC0 video_nullpkt_size;
+
+ video_nullpkt_size.val = readl(&reg->VIDEO_NULLPKT_SIZE);
+ video_nullpkt_size.bits.video_nullpkt_size = size;
+
+ writel(video_nullpkt_size.val, &reg->VIDEO_NULLPKT_SIZE);
+}
+/*
+ * Write video packet size. obligatory for sending video
+ */
+void dsi_dpi_video_packet_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x24 video_pkt_config;
+
+ video_pkt_config.val = readl(&reg->VIDEO_PKT_CONFIG);
+ video_pkt_config.bits.video_pkt_size = size;
+
+ writel(video_pkt_config.val, &reg->VIDEO_PKT_CONFIG);
+}
+/*
+ * Specifiy the size of the packet memory write start/continue
+ */
+void dsi_edpi_max_pkt_size(struct dsi_context *ctx, u16 size)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xC4 dcs_wm_pkt_size;
+
+ dcs_wm_pkt_size.val = readl(&reg->DCS_WM_PKT_SIZE);
+ dcs_wm_pkt_size.bits.dcs_wm_pkt_size = size;
+
+ writel(dcs_wm_pkt_size.val, &reg->DCS_WM_PKT_SIZE);
+}
+/*
+ * Enable tear effect acknowledge
+ */
+void dsi_tear_effect_ack_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x68 cmd_mode_cfg;
+
+ cmd_mode_cfg.val = readl(&reg->CMD_MODE_CFG);
+ cmd_mode_cfg.bits.tear_fx_en = enable;
+
+ writel(cmd_mode_cfg.val, &reg->CMD_MODE_CFG);
+}
+/*
+ * Set DCS command packet transmission to transmission type
+ */
+void dsi_cmd_mode_lp_cmd_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x68 cmd_mode_cfg;
+
+ cmd_mode_cfg.val = readl(&reg->CMD_MODE_CFG);
+
+ cmd_mode_cfg.bits.gen_sw_0p_tx = enable;
+ cmd_mode_cfg.bits.gen_sw_1p_tx = enable;
+ cmd_mode_cfg.bits.gen_sw_2p_tx = enable;
+ cmd_mode_cfg.bits.gen_lw_tx = enable;
+ cmd_mode_cfg.bits.dcs_sw_0p_tx = enable;
+ cmd_mode_cfg.bits.dcs_sw_1p_tx = enable;
+ cmd_mode_cfg.bits.dcs_lw_tx = enable;
+ cmd_mode_cfg.bits.max_rd_pkt_size = enable;
+
+ cmd_mode_cfg.bits.gen_sr_0p_tx = enable;
+ cmd_mode_cfg.bits.gen_sr_1p_tx = enable;
+ cmd_mode_cfg.bits.gen_sr_2p_tx = enable;
+ cmd_mode_cfg.bits.dcs_sr_0p_tx = enable;
+
+ writel(cmd_mode_cfg.val, &reg->CMD_MODE_CFG);
+}
+/*
+ * Set DCS read command packet transmission to transmission type
+ */
+void dsi_video_mode_lp_cmd_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x38 vid_mode_cfg;
+
+ vid_mode_cfg.val = readl(&reg->VID_MODE_CFG);
+ vid_mode_cfg.bits.lp_cmd_en = enable;
+
+ writel(vid_mode_cfg.val, &reg->VID_MODE_CFG);
+}
+
+/*
+ * Write command header in the generic interface (which also sends DCS commands) as a subset
+ */
+void dsi_set_packet_header(struct dsi_context *ctx,
+ u8 vc,
+ u8 type,
+ u8 wc_lsb,
+ u8 wc_msb)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x6C gen_hdr;
+
+ gen_hdr.bits.gen_dt = type;
+ gen_hdr.bits.gen_vc = vc;
+ gen_hdr.bits.gen_wc_lsbyte = wc_lsb;
+ gen_hdr.bits.gen_wc_msbyte = wc_msb;
+
+ writel(gen_hdr.val, &reg->GEN_HDR);
+}
+/*
+ * Write the payload of the long packet commands
+ */
+void dsi_set_packet_payload(struct dsi_context *ctx, u32 payload)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(payload, &reg->GEN_PLD_DATA);
+}
+/*
+ * Read the payload of the long packet commands
+ */
+u32 dsi_get_rx_payload(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ return readl(&reg->GEN_PLD_DATA);
+}
+
+/*
+ * Enable Bus Turn-around request
+ */
+void dsi_bta_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(enable, &reg->TA_EN);
+}
+/*
+ * Enable EOTp reception
+ */
+void dsi_eotp_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xBC eotp_en;
+
+ eotp_en.val = readl(&reg->EOTP_EN);
+ eotp_en.bits.rx_eotp_en = enable;
+
+ writel(eotp_en.val, &reg->EOTP_EN);
+}
+/*
+ * Enable EOTp transmission
+ */
+void dsi_eotp_tx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xBC eotp_en;
+
+ eotp_en.val = readl(&reg->EOTP_EN);
+ eotp_en.bits.tx_eotp_en = enable;
+
+ writel(eotp_en.val, &reg->EOTP_EN);
+}
+/*
+ * Enable ECC reception, error correction and reporting
+ */
+void dsi_ecc_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xB4 rx_pkt_check_config;
+
+ rx_pkt_check_config.val = readl(&reg->RX_PKT_CHECK_CONFIG);
+ rx_pkt_check_config.bits.rx_pkt_ecc_en = enable;
+
+ writel(rx_pkt_check_config.val, &reg->RX_PKT_CHECK_CONFIG);
+}
+/*
+ * Enable CRC reception, error reporting
+ */
+void dsi_crc_rx_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xB4 rx_pkt_check_config;
+
+ rx_pkt_check_config.val = readl(&reg->RX_PKT_CHECK_CONFIG);
+ rx_pkt_check_config.bits.rx_pkt_crc_en = enable;
+
+ writel(rx_pkt_check_config.val, &reg->RX_PKT_CHECK_CONFIG);
+}
+/*
+ * Get status of read command
+ */
+bool dsi_is_bta_returned(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdcmd_done;
+}
+/*
+ * Get the FULL status of generic read payload fifo
+ */
+bool dsi_is_rx_payload_fifo_full(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdata_fifo_full;
+}
+/*
+ * Get the EMPTY status of generic read payload fifo
+ */
+bool dsi_is_rx_payload_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_rdata_fifo_empty;
+}
+/*
+ * Get the FULL status of generic write payload fifo
+ */
+bool dsi_is_tx_payload_fifo_full(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_wdata_fifo_full;
+}
+/*
+ * Get the EMPTY status of generic write payload fifo
+ */
+bool dsi_is_tx_payload_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_wdata_fifo_empty;
+}
+/*
+ * Get the EMPTY status of generic command fifo
+ */
+bool dsi_is_tx_cmd_fifo_empty(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x98 cmd_mode_status;
+
+ cmd_mode_status.val = readl(&reg->CMD_MODE_STATUS);
+
+ return cmd_mode_status.bits.gen_cmd_cmd_fifo_empty;
+}
+/*
+ * DPI interface signal delay config
+ * param byte_cycle period for waiting after controller receiving HSYNC from
+ * DPI interface to start read pixel data from memory.
+ */
+void dsi_dpi_sig_delay(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xD0 video_sig_delay_config;
+
+ video_sig_delay_config.val = readl(&reg->VIDEO_SIG_DELAY_CONFIG);
+ video_sig_delay_config.bits.video_sig_delay = byte_cycle;
+
+ writel(video_sig_delay_config.val, &reg->VIDEO_SIG_DELAY_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch data lane from high speed to low power
+ */
+void dsi_datalane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xAC phy_datalane_time_config;
+
+ phy_datalane_time_config.val = readl(&reg->PHY_DATALANE_TIME_CONFIG);
+ phy_datalane_time_config.bits.phy_datalane_hs_to_lp_time = byte_cycle;
+
+ writel(phy_datalane_time_config.val, &reg->PHY_DATALANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch the data lane from to low power high speed
+ */
+void dsi_datalane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xAC phy_datalane_time_config;
+
+ phy_datalane_time_config.val = readl(&reg->PHY_DATALANE_TIME_CONFIG);
+ phy_datalane_time_config.bits.phy_datalane_lp_to_hs_time = byte_cycle;
+
+ writel(phy_datalane_time_config.val, &reg->PHY_DATALANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from high speed to low power
+ */
+void dsi_clklane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xA8 phy_clklane_time_config;
+
+ phy_clklane_time_config.val = readl(&reg->PHY_CLKLANE_TIME_CONFIG);
+ phy_clklane_time_config.bits.phy_clklane_hs_to_lp_time = byte_cycle;
+
+ writel(phy_clklane_time_config.val, &reg->PHY_CLKLANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to switch clock lane from to low power high speed
+ */
+void dsi_clklane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xA8 phy_clklane_time_config;
+
+ phy_clklane_time_config.val = readl(&reg->PHY_CLKLANE_TIME_CONFIG);
+ phy_clklane_time_config.bits.phy_clklane_lp_to_hs_time = byte_cycle;
+
+ writel(phy_clklane_time_config.val, &reg->PHY_CLKLANE_TIME_CONFIG);
+}
+/*
+ * Configure how many cycles of byte clock would the PHY module take
+ * to turn the bus around to start receiving
+ */
+void dsi_max_read_time(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, &reg->MAX_READ_TIME);
+}
+/*
+ * Enable the automatic mechanism to stop providing clock in the clock
+ * lane when time allows
+ */
+void dsi_nc_clk_en(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x74 phy_clk_lane_lp_ctrl;
+
+ phy_clk_lane_lp_ctrl.val = readl(&reg->PHY_CLK_LANE_LP_CTRL);
+ phy_clk_lane_lp_ctrl.bits.auto_clklane_ctrl_en = enable;
+
+ writel(phy_clk_lane_lp_ctrl.val, &reg->PHY_CLK_LANE_LP_CTRL);
+}
+/*
+ * Write transmission escape timeout
+ * a safe guard so that the state machine would reset if transmission
+ * takes too long
+ */
+void dsi_tx_escape_division(struct dsi_context *ctx, u8 div)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(div, &reg->TX_ESC_CLK_CONFIG);
+}
+/*
+ * Configure timeout divisions (so they would have more clock ticks)
+ * div no of hs cycles before transiting back to LP in
+ * (lane_clk / div)
+ */
+void dsi_timeout_clock_division(struct dsi_context *ctx, u8 div)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(div, &reg->TIMEOUT_CNT_CLK_CONFIG);
+}
+/*
+ * Configure the Low power receive time out
+ */
+void dsi_lp_rx_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, &reg->LRX_H_TO_CONFIG);
+}
+/*
+ * Configure a high speed transmission time out
+ */
+void dsi_hs_tx_timeout(struct dsi_context *ctx, u16 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, &reg->HTX_TO_CONFIG);
+}
+/*
+ * Get the error 0 interrupt register status
+ */
+u32 dsi_int0_status(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x08 protocol_int_sts;
+
+ protocol_int_sts.val = readl(&reg->PROTOCOL_INT_STS);
+ writel(protocol_int_sts.val, &reg->PROTOCOL_INT_CLR);
+
+ if (protocol_int_sts.bits.dphy_errors_0)
+ drm_err(dsi->drm, "dphy_err: escape entry error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_1)
+ drm_err(dsi->drm, "dphy_err: lp data transmission sync error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_2)
+ drm_err(dsi->drm, "dphy_err: control error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_3)
+ drm_err(dsi->drm, "dphy_err: LP0 contention error\n");
+
+ if (protocol_int_sts.bits.dphy_errors_4)
+ drm_err(dsi->drm, "dphy_err: LP1 contention error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_0)
+ drm_err(dsi->drm, "ack_err: SoT error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_1)
+ drm_err(dsi->drm, "ack_err: SoT Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_2)
+ drm_err(dsi->drm, "ack_err: EoT Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_3)
+ drm_err(dsi->drm, "ack_err: Escape Mode Entry Command error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_4)
+ drm_err(dsi->drm, "ack_err: LP Transmit Sync error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_5)
+ drm_err(dsi->drm, "ack_err: Peripheral Timeout error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_6)
+ drm_err(dsi->drm, "ack_err: False Control error\n");
+
+ if (protocol_int_sts.bits.ack_with_err_7)
+ drm_err(dsi->drm, "ack_err: reserved (specific to device)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_8)
+ drm_err(dsi->drm, "ack_err: ECC error, single-bit (corrected)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_9)
+ drm_err(dsi->drm, "ack_err: ECC error, multi-bit (not corrected)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_10)
+ drm_err(dsi->drm, "ack_err: checksum error (long packet only)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_11)
+ drm_err(dsi->drm, "ack_err: not recognized DSI data type\n");
+
+ if (protocol_int_sts.bits.ack_with_err_12)
+ drm_err(dsi->drm, "ack_err: DSI VC ID Invalid\n");
+
+ if (protocol_int_sts.bits.ack_with_err_13)
+ drm_err(dsi->drm, "ack_err: invalid transmission length\n");
+
+ if (protocol_int_sts.bits.ack_with_err_14)
+ drm_err(dsi->drm, "ack_err: reserved (specific to device)\n");
+
+ if (protocol_int_sts.bits.ack_with_err_15)
+ drm_err(dsi->drm, "ack_err: DSI protocol violation\n");
+
+ return 0;
+}
+/*
+ * Get the error 1 interrupt register status
+ */
+u32 dsi_int1_status(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x10 internal_int_sts;
+ u32 status = 0;
+
+ internal_int_sts.val = readl(&reg->INTERNAL_INT_STS);
+ writel(internal_int_sts.val, &reg->INTERNAL_INT_CLR);
+
+ if (internal_int_sts.bits.receive_pkt_size_err)
+ drm_err(dsi->drm, "receive packet size error\n");
+
+ if (internal_int_sts.bits.eotp_not_receive_err)
+ drm_err(dsi->drm, "EoTp packet is not received\n");
+
+ if (internal_int_sts.bits.gen_cmd_cmd_fifo_wr_err)
+ drm_err(dsi->drm, "cmd header-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_rdata_fifo_rd_err)
+ drm_err(dsi->drm, "cmd read-payload-fifo is empty\n");
+
+ if (internal_int_sts.bits.gen_cmd_rdata_fifo_wr_err)
+ drm_err(dsi->drm, "cmd read-payload-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_wdata_fifo_wr_err)
+ drm_err(dsi->drm, "cmd write-payload-fifo is full\n");
+
+ if (internal_int_sts.bits.gen_cmd_wdata_fifo_rd_err)
+ drm_err(dsi->drm, "cmd write-payload-fifo is empty\n");
+
+ if (internal_int_sts.bits.dpi_pix_fifo_wr_err) {
+ drm_err(dsi->drm, "DPI pixel-fifo is full\n");
+ status |= DSI_INT_STS_NEED_SOFT_RESET;
+ }
+
+ if (internal_int_sts.bits.ecc_single_err)
+ drm_err(dsi->drm, "ECC single error in a received packet\n");
+
+ if (internal_int_sts.bits.ecc_multi_err)
+ drm_err(dsi->drm, "ECC multiple error in a received packet\n");
+
+ if (internal_int_sts.bits.crc_err)
+ drm_err(dsi->drm, "CRC error in the received packet payload\n");
+
+ if (internal_int_sts.bits.hs_tx_timeout)
+ drm_err(dsi->drm, "high-speed transmission timeout\n");
+
+ if (internal_int_sts.bits.lp_rx_timeout)
+ drm_err(dsi->drm, "low-power reception timeout\n");
+
+ return status;
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 0 source
+ */
+void dsi_int0_mask(struct dsi_context *ctx, u32 mask)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(mask, &reg->MASK_PROTOCOL_INT);
+}
+/*
+ * Configure MASK (hiding) of interrupts coming from error 1 source
+ */
+void dsi_int1_mask(struct dsi_context *ctx, u32 mask)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(mask, &reg->MASK_INTERNAL_INT);
+}
diff --git a/drivers/gpu/drm/sprd/dw_dsi_ctrl.h b/drivers/gpu/drm/sprd/dw_dsi_ctrl.h
new file mode 100644
index 0000000..ffba621
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dw_dsi_ctrl.h
@@ -0,0 +1,1475 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#ifndef _DW_DSI_CTRL_H_
+#define _DW_DSI_CTRL_H_
+
+#include <asm/types.h>
+
+#include "sprd_dsi.h"
+
+struct dsi_reg {
+ union _0x00 {
+ u32 val;
+ struct _DSI_VERSION {
+ u32 dsi_version: 16;
+ u32 reserved: 16;
+ } bits;
+ } DSI_VERSION;
+
+ union _0x04 {
+ u32 val;
+ struct _SOFT_RESET {
+ /*
+ * This bit configures the core either to work normal or to
+ * reset. It's default value is 0. After the core configur-
+ * ation, to enable the mipi_dsi_host, set this register to 1.
+ * 1: power up 0: reset core
+ */
+ u32 dsi_soft_reset: 1;
+
+ u32 reserved: 31;
+ } bits;
+ } SOFT_RESET;
+
+ union _0x08 {
+ u32 val;
+ struct _PROTOCOL_INT_STS {
+ /* ErrEsc escape entry error from Lane 0 */
+ u32 dphy_errors_0: 1;
+
+ /* ErrSyncEsc low-power data transmission synchronization
+ * error from Lane 0
+ */
+ u32 dphy_errors_1: 1;
+
+ /* ErrControl error from Lane 0 */
+ u32 dphy_errors_2: 1;
+
+ /* ErrContentionLP0 LP0 contention error from Lane 0 */
+ u32 dphy_errors_3: 1;
+
+ /* ErrContentionLP1 LP1 contention error from Lane 0 */
+ u32 dphy_errors_4: 1;
+
+ /* debug mode protocol errors */
+ u32 protocol_debug_err: 11;
+
+ /* SoT error from the Acknowledge error report */
+ u32 ack_with_err_0: 1;
+
+ /* SoT Sync error from the Acknowledge error report */
+ u32 ack_with_err_1: 1;
+
+ /* EoT Sync error from the Acknowledge error report */
+ u32 ack_with_err_2: 1;
+
+ /* Escape Mode Entry Command error from the Acknowledge
+ * error report
+ */
+ u32 ack_with_err_3: 1;
+
+ /* LP Transmit Sync error from the Acknowledge error report */
+ u32 ack_with_err_4: 1;
+
+ /* Peripheral Timeout error from the Acknowledge error report */
+ u32 ack_with_err_5: 1;
+
+ /* False Control error from the Acknowledge error report */
+ u32 ack_with_err_6: 1;
+
+ /* reserved (specific to device) from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_7: 1;
+
+ /* ECC error, single-bit (detected and corrected) from the
+ * Acknowledge error report
+ */
+ u32 ack_with_err_8: 1;
+
+ /* ECC error, multi-bit (detected, not corrected) from the
+ * Acknowledge error report
+ */
+ u32 ack_with_err_9: 1;
+
+ /* checksum error (long packet only) from the Acknowledge
+ * error report
+ */
+ u32 ack_with_err_10: 1;
+
+ /* not recognized DSI data type from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_11: 1;
+
+ /* DSI VC ID Invalid from the Acknowledge error report */
+ u32 ack_with_err_12: 1;
+
+ /* invalid transmission length from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_13: 1;
+
+ /* reserved (specific to device) from the Acknowledge error
+ * report
+ */
+ u32 ack_with_err_14: 1;
+
+ /* DSI protocol violation from the Acknowledge error report */
+ u32 ack_with_err_15: 1;
+
+ } bits;
+ } PROTOCOL_INT_STS;
+
+ union _0x0C {
+ u32 val;
+ struct _MASK_PROTOCOL_INT {
+ u32 mask_dphy_errors_0: 1;
+ u32 mask_dphy_errors_1: 1;
+ u32 mask_dphy_errors_2: 1;
+ u32 mask_dphy_errors_3: 1;
+ u32 mask_dphy_errors_4: 1;
+ u32 mask_protocol_debug_err: 11;
+ u32 mask_ack_with_err_0: 1;
+ u32 mask_ack_with_err_1: 1;
+ u32 mask_ack_with_err_2: 1;
+ u32 mask_ack_with_err_3: 1;
+ u32 mask_ack_with_err_4: 1;
+ u32 mask_ack_with_err_5: 1;
+ u32 mask_ack_with_err_6: 1;
+ u32 mask_ack_with_err_7: 1;
+ u32 mask_ack_with_err_8: 1;
+ u32 mask_ack_with_err_9: 1;
+ u32 mask_ack_with_err_10: 1;
+ u32 mask_ack_with_err_11: 1;
+ u32 mask_ack_with_err_12: 1;
+ u32 mask_ack_with_err_13: 1;
+ u32 mask_ack_with_err_14: 1;
+ u32 mask_ack_with_err_15: 1;
+ } bits;
+ } MASK_PROTOCOL_INT;
+
+ union _0x10 {
+ u32 val;
+ struct _INTERNAL_INT_STS {
+ /* This bit indicates that the packet size error is detected
+ * during the packet reception.
+ */
+ u32 receive_pkt_size_err: 1;
+
+ /* This bit indicates that the EoTp packet is not received at
+ * the end of the incoming peripheral transmission
+ */
+ u32 eotp_not_receive_err: 1;
+
+ /* This bit indicates that the system tried to write a command
+ * through the Generic interface and the FIFO is full. There-
+ * fore, the command is not written.
+ */
+ u32 gen_cmd_cmd_fifo_wr_err: 1;
+
+ /* This bit indicates that during a DCS read data, the payload
+ * FIFO becomes empty and the data sent to the interface is
+ * corrupted.
+ */
+ u32 gen_cmd_rdata_fifo_rd_err: 1;
+
+ /* This bit indicates that during a generic interface packet
+ * read back, the payload FIFO becomes full and the received
+ * data is corrupted.
+ */
+ u32 gen_cmd_rdata_fifo_wr_err: 1;
+
+ /* This bit indicates that the system tried to write a payload
+ * data through the Generic interface and the FIFO is full.
+ * Therefore, the payload is not written.
+ */
+ u32 gen_cmd_wdata_fifo_wr_err: 1;
+
+ /* This bit indicates that during a Generic interface packet
+ * build, the payload FIFO becomes empty and corrupt data is
+ * sent.
+ */
+ u32 gen_cmd_wdata_fifo_rd_err: 1;
+
+ /* This bit indicates that during a DPI pixel line storage,
+ * the payload FIFO becomes full and the data stored is
+ * corrupted.
+ */
+ u32 dpi_pix_fifo_wr_err: 1;
+
+ /* internal debug error */
+ u32 internal_debug_err: 19;
+
+ /* This bit indicates that the ECC single error is detected
+ * and corrected in a received packet.
+ */
+ u32 ecc_single_err: 1;
+
+ /* This bit indicates that the ECC multiple error is detected
+ * in a received packet.
+ */
+ u32 ecc_multi_err: 1;
+
+ /* This bit indicates that the CRC error is detected in the
+ * received packet payload.
+ */
+ u32 crc_err: 1;
+
+ /* This bit indicates that the high-speed transmission timeout
+ * counter reached the end and contention is detected.
+ */
+ u32 hs_tx_timeout: 1;
+
+ /* This bit indicates that the low-power reception timeout
+ * counter reached the end and contention is detected.
+ */
+ u32 lp_rx_timeout: 1;
+
+ } bits;
+ } INTERNAL_INT_STS;
+
+ union _0x14 {
+ u32 val;
+ struct _MASK_INTERNAL_INT {
+ u32 mask_receive_pkt_size_err: 1;
+ u32 mask_eopt_not_receive_err: 1;
+ u32 mask_gen_cmd_cmd_fifo_wr_err: 1;
+ u32 mask_gen_cmd_rdata_fifo_rd_err: 1;
+ u32 mask_gen_cmd_rdata_fifo_wr_err: 1;
+ u32 mask_gen_cmd_wdata_fifo_wr_err: 1;
+ u32 mask_gen_cmd_wdata_fifo_rd_err: 1;
+ u32 mask_dpi_pix_fifo_wr_err: 1;
+ u32 mask_internal_debug_err: 19;
+ u32 mask_ecc_single_err: 1;
+ u32 mask_ecc_multi_err: 1;
+ u32 mask_crc_err: 1;
+ u32 mask_hs_tx_timeout: 1;
+ u32 mask_lp_rx_timeout: 1;
+ } bits;
+ } MASK_INTERNAL_INT;
+
+ union _0x18 {
+ u32 val;
+ struct _DSI_MODE_CFG {
+ /* This bit configures the operation mode
+ * 0: Video mode ; 1: Command mode
+ */
+ u32 cmd_video_mode: 1;
+
+ u32 reserved: 31;
+
+ } bits;
+ } DSI_MODE_CFG;
+
+ union _0x1C {
+ u32 val;
+ struct _VIRTUAL_CHANNEL_ID {
+ /* This field indicates the Generic interface read-back
+ * virtual channel identification
+ */
+ u32 gen_rx_vcid: 2;
+
+ /* This field configures the DPI virtual channel id that
+ * is indexed to the VIDEO mode packets
+ */
+ u32 video_pkt_vcid: 2;
+
+ u32 reserved: 28;
+
+ } bits;
+ } VIRTUAL_CHANNEL_ID;
+
+ union _0x20 {
+ u32 val;
+ struct _DPI_VIDEO_FORMAT {
+ /*
+ * This field configures the DPI color coding as follows:
+ * 0000: 16-bit configuration 1
+ * 0001: 16-bit configuration 2
+ * 0010: 16-bit configuration 3
+ * 0011: 18-bit configuration 1
+ * 0100: 18-bit configuration 2
+ * 0101: 24-bit
+ * 0110: 20-bit YCbCr 4:2:2 loosely packed
+ * 0111: 24-bit YCbCr 4:2:2
+ * 1000: 16-bit YCbCr 4:2:2
+ * 1001: 30-bit
+ * 1010: 36-bit
+ * 1011: 12-bit YCbCr 4:2:0
+ * 1100: Compression Display Stream
+ * 1101-1111: 12-bit YCbCr 4:2:0
+ */
+ u32 dpi_video_mode_format: 6;
+
+ /* When set to 1, this bit activates loosely packed
+ * variant to 18-bit configurations
+ */
+ u32 loosely18_en: 1;
+
+ u32 reserved: 25;
+
+ } bits;
+ } DPI_VIDEO_FORMAT;
+
+ union _0x24 {
+ u32 val;
+ struct _VIDEO_PKT_CONFIG {
+ /*
+ * This field configures the number of pixels in a single
+ * video packet. For 18-bit not loosely packed data types,
+ * this number must be a multiple of 4. For YCbCr data
+ * types, it must be a multiple of 2, as described in the
+ * DSI specification.
+ */
+ u32 video_pkt_size: 16;
+
+ /*
+ * This register configures the number of chunks to be
+ * transmitted during a Line period (a chunk consists of
+ * a video packet and a null packet). If set to 0 or 1,
+ * the video line is transmitted in a single packet. If
+ * set to 1, the packet is part of a chunk, so a null packet
+ * follows it if vid_null_size > 0. Otherwise, multiple chunks
+ * are used to transmit each video line.
+ */
+ u32 video_line_chunk_num: 16;
+
+ } bits;
+ } VIDEO_PKT_CONFIG;
+
+ union _0x28 {
+ u32 val;
+ struct _VIDEO_LINE_HBLK_TIME {
+ /* This field configures the Horizontal Back Porch period
+ * in lane byte clock cycles
+ */
+ u32 video_line_hbp_time: 16;
+
+ /* This field configures the Horizontal Synchronism Active
+ * period in lane byte clock cycles
+ */
+ u32 video_line_hsa_time: 16;
+
+ } bits;
+ } VIDEO_LINE_HBLK_TIME;
+
+ union _0x2C {
+ u32 val;
+ struct _VIDEO_LINE_TIME {
+ /* This field configures the size of the total line time
+ * (HSA+HBP+HACT+HFP) counted in lane byte clock cycles
+ */
+ u32 video_line_time: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } VIDEO_LINE_TIME;
+
+ union _0x30 {
+ u32 val;
+ struct _VIDEO_VBLK_LINES {
+ /* This field configures the Vertical Front Porch period
+ * measured in number of horizontal lines
+ */
+ u32 vfp_lines: 10;
+
+ /* This field configures the Vertical Back Porch period
+ * measured in number of horizontal lines
+ */
+ u32 vbp_lines: 10;
+
+ /* This field configures the Vertical Synchronism Active
+ * period measured in number of horizontal lines
+ */
+ u32 vsa_lines: 10;
+
+ u32 reserved: 2;
+
+ } bits;
+ } VIDEO_VBLK_LINES;
+
+ union _0x34 {
+ u32 val;
+ struct _VIDEO_VACTIVE_LINES {
+ /* This field configures the Vertical Active period measured
+ * in number of horizontal lines
+ */
+ u32 vactive_lines: 14;
+
+ u32 reserved: 18;
+
+ } bits;
+ } VIDEO_VACTIVE_LINES;
+
+ union _0x38 {
+ u32 val;
+ struct _VID_MODE_CFG {
+ /*
+ * This field indicates the video mode transmission type as
+ * follows:
+ * 00: Non-burst with sync pulses
+ * 01: Non-burst with sync events
+ * 10 and 11: Burst mode
+ */
+ u32 vid_mode_type: 2;
+
+ u32 reserved_0: 6;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VSA period when timing allows.
+ */
+ u32 lp_vsa_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VBP period when timing allows.
+ */
+ u32 lp_vbp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VFP period when timing allows.
+ */
+ u32 lp_vfp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the VACT period when timing allows.
+ */
+ u32 lp_vact_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the HBP period when timing allows.
+ */
+ u32 lp_hbp_en: 1;
+
+ /* When set to 1, this bit enables the return to low-power
+ * inside the HFP period when timing allows.
+ */
+ u32 lp_hfp_en: 1;
+
+ /* When set to 1, this bit enables the request for an ack-
+ * nowledge response at the end of a frame.
+ */
+ u32 frame_bta_ack_en: 1;
+
+ /* When set to 1, this bit enables the command transmission
+ * only in low-power mode.
+ */
+ u32 lp_cmd_en: 1;
+
+ u32 reserved_1: 16;
+
+ } bits;
+ } VID_MODE_CFG;
+
+ union _0x3C {
+ u32 val;
+ struct _SDF_MODE_CONFIG {
+ /*
+ * This field defines the 3D mode on/off & display orientation:
+ * 00: 3D mode off (2D mode on)
+ * 01: 3D mode on, portrait orientation
+ * 10: 3D mode on, landscape orientation
+ * 11: Reserved
+ */
+ u32 rf_3d_mode: 2;
+
+ /*
+ * This field defines the 3D image format:
+ * 00: Line (alternating lines of left and right data)
+ * 01: Frame (alternating frames of left and right data)
+ * 10: Pixel (alternating pixels of left and right data)
+ * 11: Reserved
+ */
+ u32 rf_3d_format: 2;
+
+ /*
+ * This field defines whether there is a second VSYNC pulse
+ * between Left and Right Images, when 3D Image Format is
+ * Frame-based:
+ * 0: No sync pulses between left and right data
+ * 1: Sync pulse (HSYNC, VSYNC, blanking) between left and
+ * right data
+ */
+ u32 second_vsync_en: 1;
+
+ /*
+ * This bit defines the left or right order:
+ * 0: Left eye data is sent first, and then the right eye data
+ * is sent.
+ * 1: Right eye data is sent first, and then the left eye data
+ * is sent.
+ */
+ u32 left_right_order: 1;
+
+ u32 reserved_0: 2;
+
+ /*
+ * When set, causes the next VSS packet to include 3D control
+ * payload in every VSS packet.
+ */
+ u32 rf_3d_payload_en: 1;
+
+ u32 reserved_1: 23;
+
+ } bits;
+ } SDF_MODE_CONFIG;
+
+ union _0x40 {
+ u32 val;
+ struct _TIMEOUT_CNT_CLK_CONFIG {
+ /*
+ * This field indicates the division factor for the Time Out
+ * clock used as the timing unit in the configuration of HS to
+ * LP and LP to HS transition error.
+ */
+ u32 timeout_cnt_clk_config: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } TIMEOUT_CNT_CLK_CONFIG;
+
+ union _0x44 {
+ u32 val;
+ struct _HTX_TO_CONFIG {
+ /*
+ * This field configures the timeout counter that triggers
+ * a high speed transmission timeout contention detection
+ * (measured in TO_CLK_DIVISION cycles).
+ *
+ * If using the non-burst mode and there is no sufficient
+ * time to switch from HS to LP and back in the period which
+ * is from one line data finishing to the next line sync
+ * start, the DSI link returns the LP state once per frame,
+ * then you should configure the TO_CLK_DIVISION and
+ * hstx_to_cnt to be in accordance with:
+ * hstx_to_cnt * lanebyteclkperiod * TO_CLK_DIVISION >= the
+ * time of one FRAME data transmission * (1 + 10%)
+ *
+ * In burst mode, RGB pixel packets are time-compressed,
+ * leaving more time during a scan line. Therefore, if in
+ * burst mode and there is sufficient time to switch from HS
+ * to LP and back in the period of time from one line data
+ * finishing to the next line sync start, the DSI link can
+ * return LP mode and back in this time interval to save power.
+ * For this, configure the TO_CLK_DIVISION and hstx_to_cnt
+ * to be in accordance with:
+ * hstx_to_cnt * lanebyteclkperiod * TO_CLK_DIVISION >= the
+ * time of one LINE data transmission * (1 + 10%)
+ */
+ u32 htx_to_cnt_limit: 32;
+ } bits;
+ } HTX_TO_CONFIG;
+
+ union _0x48 {
+ u32 val;
+ struct _LRX_H_TO_CONFIG {
+ /*
+ * This field configures the timeout counter that triggers
+ * a low-power reception timeout contention detection (measured
+ * in TO_CLK_DIVISION cycles).
+ */
+ u32 lrx_h_to_cnt_limit: 32;
+ } bits;
+ } LRX_H_TO_CONFIG;
+
+ union _0x4C {
+ u32 val;
+ struct _RD_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a low-power read oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 lprd_presp_to_cnt_limit: 16;
+
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a high-speed read oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 hsrd_presp_to_cnt_limit: 16;
+
+ } bits;
+ } RD_PRESP_TO_CONFIG;
+
+ union _0x50 {
+ u32 val;
+ struct _HSWR_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link inactive after sending a high-speed write
+ * operation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 hswr_presp_to_cnt_limit: 16;
+
+ u32 reserved_0: 8;
+
+ /*
+ * When set to 1, this bit ensures that the peripheral response
+ * timeout caused by hs_wr_to_cnt is used only once per eDPI
+ * frame, when both the following conditions are met:
+ * dpivsync_edpiwms has risen and fallen.
+ * Packets originated from eDPI have been transmitted and its
+ * FIFO is empty again In this scenario no non-eDPI requests
+ * are sent to the D-PHY, even if there is traffic from generic
+ * or DBI ready to be sent, making it return to stop state.
+ * When it does so, PRESP_TO counter is activated and only when
+ * it finishes does the controller send any other traffic that
+ * is ready.
+ */
+ u32 hswr_presp_to_mode: 1;
+
+ u32 reserved_1: 7;
+
+ } bits;
+ } HSWR_PRESP_TO_CONFIG;
+
+ union _0x54 {
+ u32 val;
+ struct _LPWR_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after sending a low-power write oper-
+ * ation. This period is measured in cycles of lanebyteclk.
+ * The counting starts when the D-PHY enters the Stop state
+ * and causes no interrupts.
+ */
+ u32 lpwr_presp_to_cnt_limit: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } LPWR_PRESP_TO_CONFIG;
+
+ union _0x58 {
+ u32 val;
+ struct _BTA_PRESP_TO_CONFIG {
+ /*
+ * This field sets a period for which the DWC_mipi_dsi_host
+ * keeps the link still, after completing a Bus Turn-Around.
+ * This period is measured in cycles of lanebyteclk. The
+ * counting starts when the D-PHY enters the Stop state and
+ * causes no interrupts.
+ */
+ u32 bta_presp_to_cnt_limit: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } BTA_PRESP_TO_CONFIG;
+
+ union _0x5C {
+ u32 val;
+ struct _TX_ESC_CLK_CONFIG {
+ /*
+ * This field indicates the division factor for the TX Escape
+ * clock source (lanebyteclk). The values 0 and 1 stop the
+ * TX_ESC clock generation.
+ */
+ u32 tx_esc_clk_config: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } TX_ESC_CLK_CONFIG;
+
+ union _0x60 {
+ u32 val;
+ struct _VACT_CMD_TRANS_LIMIT {
+ /*
+ * This field is used for the transmission of commands in
+ * low-power mode. It defines the size, in bytes, of the
+ * largest packet that can fit in a line during the VACT
+ * region.
+ */
+ u32 vact_cmd_trans_limit: 8;
+
+ u32 reserved: 24;
+
+ } bits;
+ } VACT_CMD_TRANS_LIMIT;
+
+ union _0x64 {
+ u32 val;
+ struct _VBLK_CMD_TRANS_LIMIT {
+ /*
+ * This field is used for the transmission of commands in
+ * low-power mode. It defines the size, in bytes, of the
+ * largest packet that can fit in a line during the VSA, VBP,
+ * and VFP regions.
+ */
+ u32 vblk_cmd_trans_limit: 8;
+
+ u32 reserved: 24;
+
+ } bits;
+ } VBLK_CMD_TRANS_LIMIT;
+
+ union _0x68 {
+ u32 val;
+ struct _CMD_MODE_CFG {
+ /*
+ * When set to 1, this bit enables the tearing effect
+ * acknowledge request.
+ */
+ u32 tear_fx_en: 1;
+
+ /*
+ * When set to 1, this bit enables the acknowledge request
+ * after each packet transmission.
+ */
+ u32 ack_rqst_en: 1;
+
+ u32 reserved_0: 3;
+
+ u32 pps_tx: 1;
+ u32 exq_tx: 1;
+ u32 cmc_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * zero parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_0p_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * one parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_1p_tx: 1;
+
+ /*
+ * This bit configures the Generic short write packet with
+ * two parameters command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sw_2p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * zero parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_0p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * one parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_1p_tx: 1;
+
+ /*
+ * This bit configures the Generic short read packet with
+ * two parameters command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_sr_2p_tx: 1;
+
+ /*
+ * This bit configures the Generic long write packet command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 gen_lw_tx: 1;
+
+ u32 reserved_1: 1;
+
+ /*
+ * This bit configures the DCS short write packet with zero
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sw_0p_tx: 1;
+
+ /*
+ * This bit configures the DCS short write packet with one
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sw_1p_tx: 1;
+
+ /*
+ * This bit configures the DCS short read packet with zero
+ * parameter command transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_sr_0p_tx: 1;
+
+ /*
+ * This bit configures the DCS long write packet command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 dcs_lw_tx: 1;
+
+ u32 reserved_2: 4;
+
+ /*
+ * This bit configures the maximum read packet size command
+ * transmission type:
+ * 0: High-speed 1: Low-power
+ */
+ u32 max_rd_pkt_size: 1;
+
+ u32 reserved_3: 7;
+
+ } bits;
+ } CMD_MODE_CFG;
+
+ union _0x6C {
+ u32 val;
+ struct _GEN_HDR {
+ /*
+ * This field configures the packet data type of the header
+ * packet.
+ */
+ u32 gen_dt: 6;
+
+ /*
+ * This field configures the virtual channel id of the header
+ * packet.
+ */
+ u32 gen_vc: 2;
+
+ /*
+ * This field configures the least significant byte of the
+ * header packet's Word count for long packets or data 0 for
+ * short packets.
+ */
+ u32 gen_wc_lsbyte: 8;
+
+ /*
+ * This field configures the most significant byte of the
+ * header packet's word count for long packets or data 1 for
+ * short packets.
+ */
+ u32 gen_wc_msbyte: 8;
+
+ u32 reserved: 8;
+
+ } bits;
+ } GEN_HDR;
+
+ union _0x70 {
+ u32 val;
+ struct _GEN_PLD_DATA {
+ /* This field indicates byte 1 of the packet payload. */
+ u32 gen_pld_b1: 8;
+
+ /* This field indicates byte 2 of the packet payload. */
+ u32 gen_pld_b2: 8;
+
+ /* This field indicates byte 3 of the packet payload. */
+ u32 gen_pld_b3: 8;
+
+ /* This field indicates byte 4 of the packet payload. */
+ u32 gen_pld_b4: 8;
+
+ } bits;
+ } GEN_PLD_DATA;
+
+ union _0x74 {
+ u32 val;
+ struct _PHY_CLK_LANE_LP_CTRL {
+ /* This bit controls the D-PHY PPI txrequestclkhs signal */
+ u32 phy_clklane_tx_req_hs: 1;
+
+ /* This bit enables the automatic mechanism to stop providing
+ * clock in the clock lane when time allows.
+ */
+ u32 auto_clklane_ctrl_en: 1;
+
+ u32 reserved: 30;
+ } bits;
+ } PHY_CLK_LANE_LP_CTRL;
+
+ union _0x78 {
+ u32 val;
+ struct _PHY_INTERFACE_CTRL {
+ /* When set to 0, this bit places the D-PHY macro in power-
+ * down state.
+ */
+ u32 rf_phy_shutdown: 1;
+
+ /* When set to 0, this bit places the digital section of the
+ * D-PHY in the reset state.
+ */
+ u32 rf_phy_reset_n: 1;
+
+ /* When set to 1, this bit enables the D-PHY Clock Lane
+ * module.
+ */
+ u32 rf_phy_clk_en: 1;
+
+ /* When the D-PHY is in ULPS, this bit enables the D-PHY PLL. */
+ u32 rf_phy_force_pll: 1;
+
+ /* ULPS mode Request on clock lane */
+ u32 rf_phy_clk_txrequlps: 1;
+
+ /* ULPS mode Exit on clock lane */
+ u32 rf_phy_clk_txexitulps: 1;
+
+ /* ULPS mode Request on all active data lanes */
+ u32 rf_phy_data_txrequlps: 1;
+
+ /* ULPS mode Exit on all active data lanes */
+ u32 rf_phy_data_txexitulps: 1;
+
+ u32 reserved: 24;
+ } bits;
+ } PHY_INTERFACE_CTRL;
+
+ union _0x7C {
+ u32 val;
+ struct _PHY_TX_TRIGGERS {
+ /* This field controls the trigger transmissions. */
+ u32 phy_tx_triggers: 4;
+
+ u32 reserved: 28;
+ } bits;
+ } PHY_TX_TRIGGERS;
+
+ union _0x80 {
+ u32 val;
+ struct _DESKEW_START {
+ u32 deskew_start: 1;
+ u32 reserved: 31;
+ } bits;
+ } DESKEW_START;
+
+ union _0x84 {
+ u32 val;
+ struct _DESKEW_MODE {
+ u32 deskew_mode: 2;
+ u32 reserved: 30;
+ } bits;
+ } DESKEW_MODE;
+
+ union _0x88 {
+ u32 val;
+ struct _DESKEW_TIME {
+ u32 deskew_time: 32;
+ } bits;
+ } DESKEW_TIME;
+
+ union _0x8C {
+ u32 val;
+ struct _DESKEW_PERIOD {
+ u32 deskew_period: 32;
+ } bits;
+ } DESKEW_PERIOD;
+
+ union _0x90 {
+ u32 val;
+ struct _DESKEW_BUSY {
+ u32 deskew_busy: 1;
+ u32 reserved: 31;
+ } bits;
+ } DESKEW_BUSY;
+
+ union _0x94 {
+ u32 val;
+ struct _DESKEW_LANE_MASK {
+ u32 deskew_lane0_mask: 1;
+ u32 deskew_lane1_mask: 1;
+ u32 deskew_lane2_mask: 1;
+ u32 deskew_lane3_mask: 1;
+ u32 reserved: 28;
+ } bits;
+ } DESKEW_LANE_MASK;
+
+ union _0x98 {
+ u32 val;
+ struct _CMD_MODE_STATUS {
+ /*
+ * This bit is set when a read command is issued and cleared
+ * when the entire response is stored in the FIFO.
+ * Value after reset: 0x0
+ *
+ * NOTE:
+ * For mipi-dsi-r1p0 IP, this bit is set immediately when
+ * the read cmd is set to the GEN_HDR register.
+ *
+ * For dsi-ctrl-r1p0 IP, this bit is set only after the read
+ * cmd was actually sent out from the controller.
+ */
+ u32 gen_cmd_rdcmd_ongoing: 1;
+
+ /*
+ * This bit indicates the empty status of the generic read
+ * payload FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_rdata_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic read
+ * payload FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_rdata_fifo_full: 1;
+
+ /*
+ * This bit indicates the empty status of the generic write
+ * payload FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_wdata_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic write
+ * payload FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_wdata_fifo_full: 1;
+
+ /*
+ * This bit indicates the empty status of the generic
+ * command FIFO.
+ * Value after reset: 0x1
+ */
+ u32 gen_cmd_cmd_fifo_empty: 1;
+
+ /*
+ * This bit indicates the full status of the generic
+ * command FIFO.
+ * Value after reset: 0x0
+ */
+ u32 gen_cmd_cmd_fifo_full: 1;
+
+ /*
+ * This bit is set when the entire response of read is
+ * stored in the rx payload FIFO. And it will be cleared
+ * automaticlly after read this bit each time.
+ * Value after reset: 0x0
+ *
+ * NOTE: this bit is just supported for dsi-ctrl-r1p0 IP
+ */
+ u32 gen_cmd_rdcmd_done: 1;
+
+ u32 reserved : 24;
+
+ } bits;
+ } CMD_MODE_STATUS;
+
+ union _0x9C {
+ u32 val;
+ struct _PHY_STATUS {
+ /* the status of phydirection D-PHY signal */
+ u32 phy_direction: 1;
+
+ /* the status of phylock D-PHY signal */
+ u32 phy_lock: 1;
+
+ /* the status of rxulpsesc0lane D-PHY signal */
+ u32 phy_rxulpsesc0lane: 1;
+
+ /* the status of phystopstateclklane D-PHY signal */
+ u32 phy_stopstateclklane: 1;
+
+ /* the status of phystopstate0lane D-PHY signal */
+ u32 phy_stopstate0lane: 1;
+
+ /* the status of phystopstate1lane D-PHY signal */
+ u32 phy_stopstate1lane: 1;
+
+ /* the status of phystopstate2lane D-PHY signal */
+ u32 phy_stopstate2lane: 1;
+
+ /* the status of phystopstate3lane D-PHY signal */
+ u32 phy_stopstate3lane: 1;
+
+ /* the status of phyulpsactivenotclk D-PHY signal */
+ u32 phy_ulpsactivenotclk: 1;
+
+ /* the status of ulpsactivenot0lane D-PHY signal */
+ u32 phy_ulpsactivenot0lane: 1;
+
+ /* the status of ulpsactivenot1lane D-PHY signal */
+ u32 phy_ulpsactivenot1lane: 1;
+
+ /* the status of ulpsactivenot2lane D-PHY signal */
+ u32 phy_ulpsactivenot2lane: 1;
+
+ /* the status of ulpsactivenot3lane D-PHY signal */
+ u32 phy_ulpsactivenot3lane: 1;
+
+ u32 reserved: 19;
+
+ } bits;
+ } PHY_STATUS;
+
+ union _0xA0 {
+ u32 val;
+ struct _PHY_MIN_STOP_TIME {
+ /* This field configures the minimum wait period to request
+ * a high-speed transmission after the Stop state.
+ */
+ u32 phy_min_stop_time: 8;
+
+ u32 reserved: 24;
+ } bits;
+ } PHY_MIN_STOP_TIME;
+
+ union _0xA4 {
+ u32 val;
+ struct _PHY_LANE_NUM_CONFIG {
+ /*
+ * This field configures the number of active data lanes:
+ * 00: One data lane (lane 0)
+ * 01: Two data lanes (lanes 0 and 1)
+ * 10: Three data lanes (lanes 0, 1, and 2)
+ * 11: Four data lanes (lanes 0, 1, 2, and 3)
+ */
+ u32 phy_lane_num: 2;
+
+ u32 reserved: 30;
+
+ } bits;
+ } PHY_LANE_NUM_CONFIG;
+
+ union _0xA8 {
+ u32 val;
+ struct _PHY_CLKLANE_TIME_CONFIG {
+ /*
+ * This field configures the maximum time that the D-PHY
+ * clock lane takes to go from low-power to high-speed
+ * transmission measured in lane byte clock cycles.
+ */
+ u32 phy_clklane_lp_to_hs_time: 16;
+
+ /*
+ * This field configures the maximum time that the D-PHY
+ * clock lane takes to go from high-speed to low-power
+ * transmission measured in lane byte clock cycles.
+ */
+ u32 phy_clklane_hs_to_lp_time: 16;
+
+ } bits;
+ } PHY_CLKLANE_TIME_CONFIG;
+
+ union _0xAC {
+ u32 val;
+ struct _PHY_DATALANE_TIME_CONFIG {
+ /*
+ * This field configures the maximum time that the D-PHY data
+ * lanes take to go from low-power to high-speed transmission
+ * measured in lane byte clock cycles.
+ */
+ u32 phy_datalane_lp_to_hs_time: 16;
+
+ /*
+ * This field configures the maximum time that the D-PHY data
+ * lanes take to go from high-speed to low-power transmission
+ * measured in lane byte clock cycles.
+ */
+ u32 phy_datalane_hs_to_lp_time: 16;
+
+ } bits;
+ } PHY_DATALANE_TIME_CONFIG;
+
+ union _0xB0 {
+ u32 val;
+ struct _MAX_READ_TIME {
+ /*
+ * This field configures the maximum time required to perform
+ * a read command in lane byte clock cycles. This register can
+ * only be modified when no read command is in progress.
+ */
+ u32 max_rd_time: 16;
+
+ u32 reserved: 16;
+
+ } bits;
+ } MAX_READ_TIME;
+
+ union _0xB4 {
+ u32 val;
+ struct _RX_PKT_CHECK_CONFIG {
+ /* When set to 1, this bit enables the ECC reception, error
+ * correction, and reporting.
+ */
+ u32 rx_pkt_ecc_en: 1;
+
+ /* When set to 1, this bit enables the CRC reception and error
+ * reporting.
+ */
+ u32 rx_pkt_crc_en: 1;
+
+ u32 reserved: 30;
+
+ } bits;
+ } RX_PKT_CHECK_CONFIG;
+
+ union _0xB8 {
+ u32 val;
+ struct _TA_EN {
+ /* When set to 1, this bit enables the Bus Turn-Around (BTA)
+ * request.
+ */
+ u32 ta_en: 1;
+
+ u32 reserved: 31;
+
+ } bits;
+ } TA_EN;
+
+ union _0xBC {
+ u32 val;
+ struct _EOTP_EN {
+ /* When set to 1, this bit enables the EoTp transmission */
+ u32 tx_eotp_en: 1;
+
+ /* When set to 1, this bit enables the EoTp reception. */
+ u32 rx_eotp_en: 1;
+
+ u32 reserved: 30;
+
+ } bits;
+ } EOTP_EN;
+
+ union _0xC0 {
+ u32 val;
+ struct _VIDEO_NULLPKT_SIZE {
+ /*
+ * This register configures the number of bytes inside a null
+ * packet. Setting it to 0 disables the null packets.
+ */
+ u32 video_nullpkt_size: 13;
+
+ u32 reserved: 19;
+
+ } bits;
+ } VIDEO_NULLPKT_SIZE;
+
+ union _0xC4 {
+ u32 val;
+ struct _DCS_WM_PKT_SIZE {
+ /*
+ * This field configures the maximum allowed size for an eDPI
+ * write memory command, measured in pixels. Automatic parti-
+ * tioning of data obtained from eDPI is permanently enabled.
+ */
+ u32 dcs_wm_pkt_size: 16;
+
+ u32 reserved: 16;
+ } bits;
+ } DCS_WM_PKT_SIZE;
+
+ union _0xC8 {
+ u32 val;
+ struct _PROTOCOL_INT_CLR {
+ u32 clr_dphy_errors_0: 1;
+ u32 clr_dphy_errors_1: 1;
+ u32 clr_dphy_errors_2: 1;
+ u32 clr_dphy_errors_3: 1;
+ u32 clr_dphy_errors_4: 1;
+ u32 clr_protocol_debug_err: 11;
+ u32 clr_ack_with_err_0: 1;
+ u32 clr_ack_with_err_1: 1;
+ u32 clr_ack_with_err_2: 1;
+ u32 clr_ack_with_err_3: 1;
+ u32 clr_ack_with_err_4: 1;
+ u32 clr_ack_with_err_5: 1;
+ u32 clr_ack_with_err_6: 1;
+ u32 clr_ack_with_err_7: 1;
+ u32 clr_ack_with_err_8: 1;
+ u32 clr_ack_with_err_9: 1;
+ u32 clr_ack_with_err_10: 1;
+ u32 clr_ack_with_err_11: 1;
+ u32 clr_ack_with_err_12: 1;
+ u32 clr_ack_with_err_13: 1;
+ u32 clr_ack_with_err_14: 1;
+ u32 clr_ack_with_err_15: 1;
+ } bits;
+ } PROTOCOL_INT_CLR;
+
+ union _0xCC {
+ u32 val;
+ struct _INTERNAL_INT_CLR {
+ u32 clr_receive_pkt_size_err: 1;
+ u32 clr_eopt_not_receive_err: 1;
+ u32 clr_gen_cmd_cmd_fifo_wr_err: 1;
+ u32 clr_gen_cmd_rdata_fifo_rd_err: 1;
+ u32 clr_gen_cmd_rdata_fifo_wr_err: 1;
+ u32 clr_gen_cmd_wdata_fifo_wr_err: 1;
+ u32 clr_gen_cmd_wdata_fifo_rd_err: 1;
+ u32 clr_dpi_pix_fifo_wr_err: 1;
+ u32 clr_internal_debug_err: 19;
+ u32 clr_ecc_single_err: 1;
+ u32 clr_ecc_multi_err: 1;
+ u32 clr_crc_err: 1;
+ u32 clr_hs_tx_timeout: 1;
+ u32 clr_lp_rx_timeout: 1;
+ } bits;
+ } INTERNAL_INT_CLR;
+
+ union _0xD0 {
+ u32 val;
+ struct _VIDEO_SIG_DELAY_CONFIG {
+
+ /*
+ * DPI interface signal delay to be used in clk lanebyte
+ * domain for control logic to read video data from pixel
+ * memory in mannal mode, measured in clk_lanebyte cycles
+ */
+ u32 video_sig_delay: 24;
+
+ /*
+ * 1'b1: mannal mode
+ * dsi controller will use video_sig_delay value as
+ * the delay for the packet handle logic to read video
+ * data from pixel memory.
+ *
+ * 1'b0: auto mode
+ * dsi controller will auto calculate the delay for
+ * the packet handle logic to read video data from
+ * pixel memory.
+ */
+ u32 video_sig_delay_mode: 1;
+
+ u32 reserved: 7;
+ } bits;
+ } VIDEO_SIG_DELAY_CONFIG;
+
+ u32 reservedD4_EC[7];
+
+ union _0xF0 {
+ u32 val;
+ struct _PHY_TST_CTRL0 {
+ /* PHY test interface clear (active high) */
+ u32 phy_testclr: 1;
+
+ /* This bit is used to clock the TESTDIN bus into the D-PHY */
+ u32 phy_testclk: 1;
+
+ u32 reserved: 30;
+ } bits;
+ } PHY_TST_CTRL0;
+
+ union _0xF4 {
+ u32 val;
+ struct _PHY_TST_CTRL1 {
+ /* PHY test interface input 8-bit data bus for internal
+ * register programming and test functionalities access.
+ */
+ u32 phy_testdin: 8;
+
+ /* PHY output 8-bit data bus for read-back and internal
+ * probing functionalities.
+ */
+ u32 phy_testdout: 8;
+
+ /*
+ * PHY test interface operation selector:
+ * 1: The address write operation is set on the falling edge
+ * of the testclk signal.
+ * 0: The data write operation is set on the rising edge of
+ * the testclk signal.
+ */
+ u32 phy_testen: 1;
+
+ u32 reserved: 15;
+ } bits;
+ } PHY_TST_CTRL1;
+
+ u32 reservedF8_1FC[66];
+
+ union _0x200 {
+ u32 val;
+ struct _INT_PLL_STS {
+ u32 int_pll_sts: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_STS;
+
+ union _0x204 {
+ u32 val;
+ struct _INT_PLL_MSK {
+ u32 int_pll_msk: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_MSK;
+
+ union _0x208 {
+ u32 val;
+ struct _INT_PLL_CLR {
+ u32 int_pll_clr: 1;
+ u32 reserved: 31;
+ } bits;
+ } INT_PLL_CLR;
+
+};
+
+void dsi_power_enable(struct dsi_context *ctx, int enable);
+void dsi_video_mode(struct dsi_context *ctx);
+void dsi_cmd_mode(struct dsi_context *ctx);
+bool dsi_is_cmd_mode(struct dsi_context *ctx);
+void dsi_rx_vcid(struct dsi_context *ctx, u8 vc);
+void dsi_video_vcid(struct dsi_context *ctx, u8 vc);
+void dsi_dpi_video_burst_mode(struct dsi_context *ctx, int mode);
+void dsi_dpi_color_coding(struct dsi_context *ctx, int coding);
+void dsi_dpi_sig_delay(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_dpi_hline_time(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_dpi_hsync_time(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_dpi_hbp_time(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_dpi_vact(struct dsi_context *ctx, u16 lines);
+void dsi_dpi_vfp(struct dsi_context *ctx, u16 lines);
+void dsi_dpi_vbp(struct dsi_context *ctx, u16 lines);
+void dsi_dpi_vsync(struct dsi_context *ctx, u16 lines);
+void dsi_dpi_hporch_lp_en(struct dsi_context *ctx, int enable);
+void dsi_dpi_vporch_lp_en(struct dsi_context *ctx, int enable);
+void dsi_dpi_frame_ack_en(struct dsi_context *ctx, int enable);
+void dsi_dpi_chunk_num(struct dsi_context *ctx, u16 no);
+void dsi_dpi_null_packet_size(struct dsi_context *ctx, u16 size);
+void dsi_dpi_video_packet_size(struct dsi_context *ctx, u16 size);
+void dsi_edpi_max_pkt_size(struct dsi_context *ctx, u16 size);
+void dsi_tear_effect_ack_en(struct dsi_context *ctx, int enable);
+void dsi_cmd_mode_lp_cmd_en(struct dsi_context *ctx, int enable);
+void dsi_video_mode_lp_cmd_en(struct dsi_context *ctx, int enable);
+void dsi_set_packet_header(struct dsi_context *ctx, u8 vc, u8 type,
+ u8 wc_lsb, u8 wc_msb);
+void dsi_set_packet_payload(struct dsi_context *ctx, u32 payload);
+u32 dsi_get_rx_payload(struct dsi_context *ctx);
+void dsi_bta_en(struct dsi_context *ctx, int enable);
+void dsi_eotp_rx_en(struct dsi_context *ctx, int enable);
+void dsi_eotp_tx_en(struct dsi_context *ctx, int enable);
+void dsi_ecc_rx_en(struct dsi_context *ctx, int enable);
+void dsi_crc_rx_en(struct dsi_context *ctx, int enable);
+bool dsi_is_bta_returned(struct dsi_context *ctx);
+bool dsi_is_rx_payload_fifo_full(struct dsi_context *ctx);
+bool dsi_is_rx_payload_fifo_empty(struct dsi_context *ctx);
+bool dsi_is_tx_payload_fifo_full(struct dsi_context *ctx);
+bool dsi_is_tx_payload_fifo_empty(struct dsi_context *ctx);
+bool dsi_is_tx_cmd_fifo_empty(struct dsi_context *ctx);
+void dsi_datalane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_datalane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_clklane_hs2lp_config(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_clklane_lp2hs_config(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_max_read_time(struct dsi_context *ctx, u16 byte_cycle);
+void dsi_nc_clk_en(struct dsi_context *ctx, int enable);
+void dsi_tx_escape_division(struct dsi_context *ctx, u8 div);
+void dsi_timeout_clock_division(struct dsi_context *ctx, u8 div);
+void dsi_lp_rx_timeout(struct dsi_context *ctx, u16 count);
+void dsi_hs_tx_timeout(struct dsi_context *ctx, u16 count);
+u32 dsi_int0_status(struct dsi_context *ctx);
+u32 dsi_int1_status(struct dsi_context *ctx);
+void dsi_int0_mask(struct dsi_context *ctx, u32 mask);
+void dsi_int1_mask(struct dsi_context *ctx, u32 mask);
+
+#endif /* _DW_DSI_CTRL_H_ */
diff --git a/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.c b/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.c
new file mode 100644
index 0000000..6e28d7c
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include "dw_dsi_ctrl.h"
+#include "dw_dsi_ctrl_ppi.h"
+
+/*
+ * Reset D-PHY module
+ */
+void dsi_phy_rstz(struct dsi_context *ctx, int level)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(&reg->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_reset_n = level;
+
+ writel(phy_interface_ctrl.val, &reg->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Power up/down D-PHY module
+ */
+void dsi_phy_shutdownz(struct dsi_context *ctx, int level)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(&reg->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_shutdown = level;
+
+ writel(phy_interface_ctrl.val, &reg->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Configure minimum wait period for HS transmission request after a stop state
+ */
+void dsi_phy_stop_wait_time(struct dsi_context *ctx, u8 byte_cycle)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(byte_cycle, &reg->PHY_MIN_STOP_TIME);
+}
+
+/*
+ * Set number of active lanes
+ */
+void dsi_phy_datalane_en(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+
+ writel(ctx->lanes - 1, &reg->PHY_LANE_NUM_CONFIG);
+}
+
+/*
+ * Enable clock lane module
+ */
+void dsi_phy_clklane_en(struct dsi_context *ctx, int en)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x78 phy_interface_ctrl;
+
+ phy_interface_ctrl.val = readl(&reg->PHY_INTERFACE_CTRL);
+ phy_interface_ctrl.bits.rf_phy_clk_en = en;
+
+ writel(phy_interface_ctrl.val, &reg->PHY_INTERFACE_CTRL);
+}
+
+/*
+ * Request the PHY module to start transmission of high speed clock.
+ * This causes the clock lane to start transmitting DDR clock on the
+ * lane interconnect.
+ */
+void dsi_phy_clk_hs_rqst(struct dsi_context *ctx, int enable)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x74 phy_clk_lane_lp_ctrl;
+
+ phy_clk_lane_lp_ctrl.val = readl(&reg->PHY_CLK_LANE_LP_CTRL);
+ phy_clk_lane_lp_ctrl.bits.auto_clklane_ctrl_en = 0;
+ phy_clk_lane_lp_ctrl.bits.phy_clklane_tx_req_hs = enable;
+
+ writel(phy_clk_lane_lp_ctrl.val, &reg->PHY_CLK_LANE_LP_CTRL);
+}
+
+/*
+ * Get D-PHY PPI status
+ */
+u8 dsi_phy_is_pll_locked(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0x9C phy_status;
+
+ phy_status.val = readl(&reg->PHY_STATUS);
+
+ return phy_status.bits.phy_lock;
+}
+
+void dsi_phy_test_clk(struct dsi_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xF0 phy_tst_ctrl0;
+
+ phy_tst_ctrl0.val = readl(&reg->PHY_TST_CTRL0);
+ phy_tst_ctrl0.bits.phy_testclk = value;
+
+ writel(phy_tst_ctrl0.val, &reg->PHY_TST_CTRL0);
+}
+
+void dsi_phy_test_clr(struct dsi_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xF0 phy_tst_ctrl0;
+
+ phy_tst_ctrl0.val = readl(&reg->PHY_TST_CTRL0);
+ phy_tst_ctrl0.bits.phy_testclr = value;
+
+ writel(phy_tst_ctrl0.val, &reg->PHY_TST_CTRL0);
+}
+
+void dsi_phy_test_en(struct dsi_context *ctx, u8 value)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(&reg->PHY_TST_CTRL1);
+ phy_tst_ctrl1.bits.phy_testen = value;
+
+ writel(phy_tst_ctrl1.val, &reg->PHY_TST_CTRL1);
+}
+
+u8 dsi_phy_test_dout(struct dsi_context *ctx)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(&reg->PHY_TST_CTRL1);
+
+ return phy_tst_ctrl1.bits.phy_testdout;
+}
+
+void dsi_phy_test_din(struct dsi_context *ctx, u8 data)
+{
+ struct dsi_reg *reg = (struct dsi_reg *)ctx->base;
+ union _0xF4 phy_tst_ctrl1;
+
+ phy_tst_ctrl1.val = readl(&reg->PHY_TST_CTRL1);
+ phy_tst_ctrl1.bits.phy_testdin = data;
+
+ writel(phy_tst_ctrl1.val, &reg->PHY_TST_CTRL1);
+}
diff --git a/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.h b/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.h
new file mode 100644
index 0000000..d87fb75
--- /dev/null
+++ b/drivers/gpu/drm/sprd/dw_dsi_ctrl_ppi.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#ifndef _DW_DSI_CTRL_PPI_H_
+#define _DW_DSI_CTRL_PPI_H_
+
+#include "sprd_dsi.h"
+
+void dsi_phy_rstz(struct dsi_context *ctx, int level);
+void dsi_phy_shutdownz(struct dsi_context *ctx, int level);
+void dsi_phy_force_pll(struct dsi_context *ctx, int force);
+void dsi_phy_stop_wait_time(struct dsi_context *ctx, u8 byte_clk);
+void dsi_phy_datalane_en(struct dsi_context *ctx);
+void dsi_phy_clklane_en(struct dsi_context *ctx, int en);
+void dsi_phy_clk_hs_rqst(struct dsi_context *ctx, int en);
+u8 dsi_phy_is_pll_locked(struct dsi_context *ctx);
+void dsi_phy_test_clk(struct dsi_context *ctx, u8 level);
+void dsi_phy_test_clr(struct dsi_context *ctx, u8 level);
+void dsi_phy_test_en(struct dsi_context *ctx, u8 level);
+u8 dsi_phy_test_dout(struct dsi_context *ctx);
+void dsi_phy_test_din(struct dsi_context *ctx, u8 data);
+void dsi_phy_bist_en(struct dsi_context *ctx, int en);
+
+#endif /* _DW_DSI_CTRL_PPI_H_ */
\ No newline at end of file
diff --git a/drivers/gpu/drm/sprd/megacores_pll.c b/drivers/gpu/drm/sprd/megacores_pll.c
new file mode 100644
index 0000000..03c1f0f
--- /dev/null
+++ b/drivers/gpu/drm/sprd/megacores_pll.c
@@ -0,0 +1,317 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#include <asm/div64.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/regmap.h>
+#include <linux/string.h>
+
+#include "megacores_pll.h"
+
+#define L 0
+#define H 1
+#define CLK 0
+#define DATA 1
+#define INFINITY 0xffffffff
+#define MIN_OUTPUT_FREQ (100)
+
+#define AVERAGE(a, b) (min(a, b) + abs((b) - (a)) / 2)
+
+/* sharkle */
+#define VCO_BAND_LOW 750
+#define VCO_BAND_MID 1100
+#define VCO_BAND_HIGH 1500
+#define PHY_REF_CLK 26000
+
+static int dphy_calc_pll_param(struct dphy_pll *pll)
+{
+ const u32 khz = 1000;
+ const u32 mhz = 1000000;
+ const unsigned long long factor = 100;
+ unsigned long long tmp;
+ int i;
+
+ pll->potential_fvco = pll->freq / khz;
+ pll->ref_clk = PHY_REF_CLK / khz;
+
+ for (i = 0; i < 4; ++i) {
+ if (pll->potential_fvco >= VCO_BAND_LOW &&
+ pll->potential_fvco <= VCO_BAND_HIGH) {
+ pll->fvco = pll->potential_fvco;
+ pll->out_sel = BIT(i);
+ break;
+ }
+ pll->potential_fvco <<= 1;
+ }
+ if (pll->fvco == 0)
+ return -EINVAL;
+
+ if (pll->fvco >= VCO_BAND_LOW && pll->fvco <= VCO_BAND_MID) {
+ /* vco band control */
+ pll->vco_band = 0x0;
+ /* low pass filter control */
+ pll->lpf_sel = 1;
+ } else if (pll->fvco > VCO_BAND_MID && pll->fvco <= VCO_BAND_HIGH) {
+ pll->vco_band = 0x1;
+ pll->lpf_sel = 0;
+ } else
+ return -EINVAL;
+
+ pll->nint = pll->fvco / pll->ref_clk;
+ tmp = pll->fvco * factor * mhz;
+ do_div(tmp, pll->ref_clk);
+ tmp = tmp - pll->nint * factor * mhz;
+ tmp *= BIT(20);
+ do_div(tmp, 100000000);
+ pll->kint = (u32)tmp;
+ pll->refin = 3; /* pre-divider bypass */
+ pll->sdm_en = true; /* use fraction N PLL */
+ pll->fdk_s = 0x1; /* fraction */
+ pll->cp_s = 0x0;
+ pll->det_delay = 0x1;
+
+ return 0;
+}
+
+static void dphy_set_pll_reg(struct dphy_pll *pll, struct regmap *regmap)
+{
+ struct pll_reg *reg = &pll->reg;
+ u8 *val;
+ int i;
+
+ u8 reg_addr[] = {
+ 0x03, 0x04, 0x06, 0x08, 0x09,
+ 0x0a, 0x0b, 0x0e, 0x0f
+ };
+
+ reg->_03.bits.prbs_bist = 1;
+ reg->_03.bits.en_lp_treot = true;
+ reg->_03.bits.lpf_sel = pll->lpf_sel;
+ reg->_03.bits.txfifo_bypass = 0;
+ reg->_04.bits.div = pll->div;
+ reg->_04.bits.masterof8lane = 1;
+ reg->_04.bits.cp_s = pll->cp_s;
+ reg->_04.bits.fdk_s = pll->fdk_s;
+ reg->_06.bits.nint = pll->nint;
+ reg->_08.bits.vco_band = pll->vco_band;
+ reg->_08.bits.sdm_en = pll->sdm_en;
+ reg->_08.bits.refin = pll->refin;
+ reg->_09.bits.kint_h = pll->kint >> 12;
+ reg->_0a.bits.kint_m = (pll->kint >> 4) & 0xff;
+ reg->_0b.bits.out_sel = pll->out_sel;
+ reg->_0b.bits.kint_l = pll->kint & 0xf;
+ reg->_0e.bits.pll_pu_byp = 0;
+ reg->_0e.bits.pll_pu = 0;
+ reg->_0e.bits.stopstate_sel = 1;
+ reg->_0f.bits.det_delay = pll->det_delay;
+
+ val = (u8 *)&reg;
+
+ for (i = 0; i < sizeof(reg_addr); ++i) {
+ regmap_write(regmap, reg_addr[i], val[i]);
+ DRM_DEBUG("%02x: %02x\n", reg_addr[i], val[i]);
+ }
+}
+
+int dphy_pll_config(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ struct regmap *regmap = ctx->regmap;
+ struct dphy_pll *pll = ctx->pll;
+ int ret;
+
+ pll->freq = ctx->byte_clk * 8;
+
+ /* FREQ = 26M * (NINT + KINT / 2^20) / out_sel */
+ ret = dphy_calc_pll_param(pll);
+ if (ret) {
+ drm_err(dsi->drm, "failed to calculate dphy pll parameters\n");
+ return ret;
+ }
+ dphy_set_pll_reg(pll, regmap);
+
+ return 0;
+}
+
+static void dphy_set_timing_reg(struct regmap *regmap, int type, u8 val[])
+{
+ switch (type) {
+ case REQUEST_TIME:
+ regmap_write(regmap, 0x31, val[CLK]);
+ regmap_write(regmap, 0x41, val[DATA]);
+ regmap_write(regmap, 0x51, val[DATA]);
+ regmap_write(regmap, 0x61, val[DATA]);
+ regmap_write(regmap, 0x71, val[DATA]);
+
+ regmap_write(regmap, 0x90, val[CLK]);
+ regmap_write(regmap, 0xa0, val[DATA]);
+ regmap_write(regmap, 0xb0, val[DATA]);
+ regmap_write(regmap, 0xc0, val[DATA]);
+ regmap_write(regmap, 0xd0, val[DATA]);
+ break;
+ case PREPARE_TIME:
+ regmap_write(regmap, 0x32, val[CLK]);
+ regmap_write(regmap, 0x42, val[DATA]);
+ regmap_write(regmap, 0x52, val[DATA]);
+ regmap_write(regmap, 0x62, val[DATA]);
+ regmap_write(regmap, 0x72, val[DATA]);
+
+ regmap_write(regmap, 0x91, val[CLK]);
+ regmap_write(regmap, 0xa1, val[DATA]);
+ regmap_write(regmap, 0xb1, val[DATA]);
+ regmap_write(regmap, 0xc1, val[DATA]);
+ regmap_write(regmap, 0xd1, val[DATA]);
+ break;
+ case ZERO_TIME:
+ regmap_write(regmap, 0x33, val[CLK]);
+ regmap_write(regmap, 0x43, val[DATA]);
+ regmap_write(regmap, 0x53, val[DATA]);
+ regmap_write(regmap, 0x63, val[DATA]);
+ regmap_write(regmap, 0x73, val[DATA]);
+
+ regmap_write(regmap, 0x92, val[CLK]);
+ regmap_write(regmap, 0xa2, val[DATA]);
+ regmap_write(regmap, 0xb2, val[DATA]);
+ regmap_write(regmap, 0xc2, val[DATA]);
+ regmap_write(regmap, 0xd2, val[DATA]);
+ break;
+ case TRAIL_TIME:
+ regmap_write(regmap, 0x34, val[CLK]);
+ regmap_write(regmap, 0x44, val[DATA]);
+ regmap_write(regmap, 0x54, val[DATA]);
+ regmap_write(regmap, 0x64, val[DATA]);
+ regmap_write(regmap, 0x74, val[DATA]);
+
+ regmap_write(regmap, 0x93, val[CLK]);
+ regmap_write(regmap, 0xa3, val[DATA]);
+ regmap_write(regmap, 0xb3, val[DATA]);
+ regmap_write(regmap, 0xc3, val[DATA]);
+ regmap_write(regmap, 0xd3, val[DATA]);
+ break;
+ case EXIT_TIME:
+ regmap_write(regmap, 0x36, val[CLK]);
+ regmap_write(regmap, 0x46, val[DATA]);
+ regmap_write(regmap, 0x56, val[DATA]);
+ regmap_write(regmap, 0x66, val[DATA]);
+ regmap_write(regmap, 0x76, val[DATA]);
+
+ regmap_write(regmap, 0x95, val[CLK]);
+ regmap_write(regmap, 0xA5, val[DATA]);
+ regmap_write(regmap, 0xB5, val[DATA]);
+ regmap_write(regmap, 0xc5, val[DATA]);
+ regmap_write(regmap, 0xd5, val[DATA]);
+ break;
+ case CLKPOST_TIME:
+ regmap_write(regmap, 0x35, val[CLK]);
+ regmap_write(regmap, 0x94, val[CLK]);
+ break;
+
+ /* the following just use default value */
+ case SETTLE_TIME:
+ case TA_GET:
+ case TA_GO:
+ case TA_SURE:
+ break;
+ default:
+ break;
+ }
+}
+
+void dphy_timing_config(struct dsi_context *ctx)
+{
+ struct regmap *regmap = ctx->regmap;
+ struct dphy_pll *pll = ctx->pll;
+ const u32 factor = 2;
+ const u32 scale = 100;
+ u32 t_ui, t_byteck, t_half_byteck;
+ u32 range[2], constant;
+ u8 val[2];
+ u32 tmp = 0;
+
+ /* t_ui: 1 ui, byteck: 8 ui, half byteck: 4 ui */
+ t_ui = 1000 * scale / (pll->freq / 1000);
+ t_byteck = t_ui << 3;
+ t_half_byteck = t_ui << 2;
+ constant = t_ui << 1;
+
+ /* REQUEST_TIME: HS T-LPX: LP-01
+ * For T-LPX, mipi spec defined min value is 50ns,
+ * but maybe it shouldn't be too small, because BTA,
+ * LP-10, LP-00, LP-01, all of this is related to T-LPX.
+ */
+ range[L] = 50 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * (factor << 1), t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_reg(regmap, REQUEST_TIME, val);
+
+ /* PREPARE_TIME: HS sequence: LP-00 */
+ range[L] = 38 * scale;
+ range[H] = 95 * scale;
+ tmp = AVERAGE(range[L], range[H]);
+ val[CLK] = DIV_ROUND_UP(AVERAGE(range[L], range[H]),
+ t_half_byteck) - 1;
+ range[L] = 40 * scale + 4 * t_ui;
+ range[H] = 85 * scale + 6 * t_ui;
+ tmp |= AVERAGE(range[L], range[H]) << 16;
+ val[DATA] = DIV_ROUND_UP(AVERAGE(range[L], range[H]),
+ t_half_byteck) - 1;
+ dphy_set_timing_reg(regmap, PREPARE_TIME, val);
+
+ /* ZERO_TIME: HS-ZERO */
+ range[L] = 300 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor + (tmp & 0xffff)
+ - 525 * t_byteck / 100, t_byteck) - 2;
+ range[L] = 145 * scale + 10 * t_ui;
+ val[DATA] = DIV_ROUND_UP(range[L] * factor
+ + ((tmp >> 16) & 0xffff) - 525 * t_byteck / 100,
+ t_byteck) - 2;
+ dphy_set_timing_reg(regmap, ZERO_TIME, val);
+
+ /* TRAIL_TIME: HS-TRAIL */
+ range[L] = 60 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor - constant, t_half_byteck);
+ range[L] = max(8 * t_ui, 60 * scale + 4 * t_ui);
+ val[DATA] = DIV_ROUND_UP(range[L] * 3 / 2 - constant, t_half_byteck) - 2;
+ dphy_set_timing_reg(regmap, TRAIL_TIME, val);
+
+ /* EXIT_TIME: */
+ range[L] = 100 * scale;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor, t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_reg(regmap, EXIT_TIME, val);
+
+ /* CLKPOST_TIME: */
+ range[L] = 60 * scale + 52 * t_ui;
+ range[H] = INFINITY;
+ val[CLK] = DIV_ROUND_UP(range[L] * factor, t_byteck) - 2;
+ val[DATA] = val[CLK];
+ dphy_set_timing_reg(regmap, CLKPOST_TIME, val);
+
+ /* SETTLE_TIME:
+ * This time is used for receiver. So for transmitter,
+ * it can be ignored.
+ */
+
+ /* TA_GO:
+ * transmitter drives bridge state(LP-00) before releasing control,
+ * reg 0x1f default value: 0x04, which is good.
+ */
+
+ /* TA_SURE:
+ * After LP-10 state and before bridge state(LP-00),
+ * reg 0x20 default value: 0x01, which is good.
+ */
+
+ /* TA_GET:
+ * receiver drives Bridge state(LP-00) before releasing control
+ * reg 0x21 default value: 0x03, which is good.
+ */
+}
diff --git a/drivers/gpu/drm/sprd/megacores_pll.h b/drivers/gpu/drm/sprd/megacores_pll.h
new file mode 100644
index 0000000..750dbbc
--- /dev/null
+++ b/drivers/gpu/drm/sprd/megacores_pll.h
@@ -0,0 +1,146 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#ifndef _MEGACORES_PLL_H_
+#define _MEGACORES_PLL_H_
+
+#include "sprd_dsi.h"
+
+enum PLL_TIMING {
+ NONE,
+ REQUEST_TIME,
+ PREPARE_TIME,
+ SETTLE_TIME,
+ ZERO_TIME,
+ TRAIL_TIME,
+ EXIT_TIME,
+ CLKPOST_TIME,
+ TA_GET,
+ TA_GO,
+ TA_SURE,
+ TA_WAIT,
+};
+
+struct pll_reg {
+ union __reg_03__ {
+ struct __03 {
+ u8 prbs_bist: 1;
+ u8 en_lp_treot: 1;
+ u8 lpf_sel: 4;
+ u8 txfifo_bypass: 1;
+ u8 freq_hopping: 1;
+ } bits;
+ u8 val;
+ } _03;
+ union __reg_04__ {
+ struct __04 {
+ u8 div: 3;
+ u8 masterof8lane: 1;
+ u8 hop_trig: 1;
+ u8 cp_s: 2;
+ u8 fdk_s: 1;
+ } bits;
+ u8 val;
+ } _04;
+ union __reg_06__ {
+ struct __06 {
+ u8 nint: 7;
+ u8 mod_en: 1;
+ } bits;
+ u8 val;
+ } _06;
+ union __reg_07__ {
+ struct __07 {
+ u8 kdelta_h: 8;
+ } bits;
+ u8 val;
+ } _07;
+ union __reg_08__ {
+ struct __08 {
+ u8 vco_band: 1;
+ u8 sdm_en: 1;
+ u8 refin: 2;
+ u8 kdelta_l: 4;
+ } bits;
+ u8 val;
+ } _08;
+ union __reg_09__ {
+ struct __09 {
+ u8 kint_h: 8;
+ } bits;
+ u8 val;
+ } _09;
+ union __reg_0a__ {
+ struct __0a {
+ u8 kint_m: 8;
+ } bits;
+ u8 val;
+ } _0a;
+ union __reg_0b__ {
+ struct __0b {
+ u8 out_sel: 4;
+ u8 kint_l: 4;
+ } bits;
+ u8 val;
+ } _0b;
+ union __reg_0c__ {
+ struct __0c {
+ u8 kstep_h: 8;
+ } bits;
+ u8 val;
+ } _0c;
+ union __reg_0d__ {
+ struct __0d {
+ u8 kstep_m: 8;
+ } bits;
+ u8 val;
+ } _0d;
+ union __reg_0e__ {
+ struct __0e {
+ u8 pll_pu_byp: 1;
+ u8 pll_pu: 1;
+ u8 hsbist_len: 2;
+ u8 stopstate_sel: 1;
+ u8 kstep_l: 3;
+ } bits;
+ u8 val;
+ } _0e;
+ union __reg_0f__ {
+ struct __0f {
+ u8 det_delay:2;
+ u8 kdelta: 4;
+ u8 ldo0p4:2;
+ } bits;
+ u8 val;
+ } _0f;
+};
+
+struct dphy_pll {
+ u8 refin; /* Pre-divider control signal */
+ u8 cp_s; /* 00: SDM_EN=1, 10: SDM_EN=0 */
+ u8 fdk_s; /* PLL mode control: integer or fraction */
+ u8 sdm_en;
+ u8 div;
+ u8 int_n; /* integer N PLL */
+ u32 ref_clk; /* dphy reference clock, unit: MHz */
+ u32 freq; /* panel config, unit: KHz */
+ u32 fvco;
+ u32 potential_fvco;
+ u32 nint; /* sigma delta modulator NINT control */
+ u32 kint; /* sigma delta modulator KINT control */
+ u8 lpf_sel; /* low pass filter control */
+ u8 out_sel; /* post divider control */
+ u8 vco_band; /* vco range */
+ u8 det_delay;
+
+ struct pll_reg reg;
+};
+
+struct dsi_context;
+
+int dphy_pll_config(struct dsi_context *ctx);
+void dphy_timing_config(struct dsi_context *ctx);
+
+#endif /* _MEGACORES_PLL_H_ */
\ No newline at end of file
diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c
index ca93be2..5323e23 100644
--- a/drivers/gpu/drm/sprd/sprd_drm.c
+++ b/drivers/gpu/drm/sprd/sprd_drm.c
@@ -197,6 +197,7 @@ static struct platform_driver sprd_drm_driver = {
static struct platform_driver *sprd_drm_drivers[] = {
&sprd_drm_driver,
&sprd_dpu_driver,
+ &sprd_dsi_driver,
};

static int __init sprd_drm_init(void)
diff --git a/drivers/gpu/drm/sprd/sprd_drm.h b/drivers/gpu/drm/sprd/sprd_drm.h
index 85d4a8b..95d1b97 100644
--- a/drivers/gpu/drm/sprd/sprd_drm.h
+++ b/drivers/gpu/drm/sprd/sprd_drm.h
@@ -14,5 +14,6 @@ struct sprd_drm {
};

extern struct platform_driver sprd_dpu_driver;
+extern struct platform_driver sprd_dsi_driver;

#endif /* _SPRD_DRM_H_ */
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c
new file mode 100644
index 0000000..4ebc1aa
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dsi.c
@@ -0,0 +1,1162 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_graph.h>
+#include <video/mipi_display.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_probe_helper.h>
+
+#include "sprd_drm.h"
+#include "sprd_dpu.h"
+#include "sprd_dsi.h"
+#include "dw_dsi_ctrl.h"
+#include "dw_dsi_ctrl_ppi.h"
+
+#define encoder_to_dsi(encoder) \
+ container_of(encoder, struct sprd_dsi, encoder)
+#define host_to_dsi(host) \
+ container_of(host, struct sprd_dsi, host)
+#define connector_to_dsi(connector) \
+ container_of(connector, struct sprd_dsi, connector)
+
+static int regmap_tst_io_write(void *context, u32 reg, u32 val)
+{
+ struct sprd_dsi *dsi = context;
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (val > 0xff || reg > 0xff)
+ return -EINVAL;
+
+ drm_dbg(dsi->drm, "reg = 0x%02x, val = 0x%02x\n", reg, val);
+
+ dsi_phy_test_en(ctx, 1);
+ dsi_phy_test_din(ctx, reg);
+ dsi_phy_test_clk(ctx, 1);
+ dsi_phy_test_clk(ctx, 0);
+ dsi_phy_test_en(ctx, 0);
+ dsi_phy_test_din(ctx, val);
+ dsi_phy_test_clk(ctx, 1);
+ dsi_phy_test_clk(ctx, 0);
+
+ return 0;
+}
+
+static int regmap_tst_io_read(void *context, u32 reg, u32 *val)
+{
+ struct sprd_dsi *dsi = context;
+ struct dsi_context *ctx = &dsi->ctx;
+ int ret;
+
+ if (reg > 0xff)
+ return -EINVAL;
+
+ dsi_phy_test_en(ctx, 1);
+ dsi_phy_test_din(ctx, reg);
+ dsi_phy_test_clk(ctx, 1);
+ dsi_phy_test_clk(ctx, 0);
+ dsi_phy_test_en(ctx, 0);
+
+ udelay(1);
+
+ ret = dsi_phy_test_dout(ctx);
+ if (ret < 0)
+ return ret;
+
+ *val = ret;
+
+ drm_dbg(dsi->drm, "reg = 0x%02x, val = 0x%02x\n", reg, *val);
+ return 0;
+}
+
+static struct regmap_bus regmap_tst_io = {
+ .reg_write = regmap_tst_io_write,
+ .reg_read = regmap_tst_io_read,
+};
+
+static const struct regmap_config byte_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+};
+
+static int dphy_wait_pll_locked(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ int i;
+
+ for (i = 0; i < 50000; i++) {
+ if (dsi_phy_is_pll_locked(ctx))
+ return 0;
+ udelay(3);
+ }
+
+ drm_err(dsi->drm, "dphy pll can not be locked\n");
+ return -ETIMEDOUT;
+}
+
+static int dsi_wait_tx_payload_fifo_empty(struct dsi_context *ctx)
+{
+ int i;
+
+ for (i = 0; i < 5000; i++) {
+ if (dsi_is_tx_payload_fifo_empty(ctx))
+ return 0;
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int dsi_wait_tx_cmd_fifo_empty(struct dsi_context *ctx)
+{
+ int i;
+
+ for (i = 0; i < 5000; i++) {
+ if (dsi_is_tx_cmd_fifo_empty(ctx))
+ return 0;
+ udelay(1);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int dsi_wait_rd_resp_completed(struct dsi_context *ctx)
+{
+ int i;
+
+ for (i = 0; i < 10000; i++) {
+ if (dsi_is_bta_returned(ctx))
+ return 0;
+ udelay(10);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static u16 calc_bytes_per_pixel_x100(int coding)
+{
+ u16 Bpp_x100;
+
+ switch (coding) {
+ case COLOR_CODE_16BIT_CONFIG1:
+ case COLOR_CODE_16BIT_CONFIG2:
+ case COLOR_CODE_16BIT_CONFIG3:
+ Bpp_x100 = 200;
+ break;
+ case COLOR_CODE_18BIT_CONFIG1:
+ case COLOR_CODE_18BIT_CONFIG2:
+ Bpp_x100 = 225;
+ break;
+ case COLOR_CODE_24BIT:
+ Bpp_x100 = 300;
+ break;
+ case COLOR_CODE_COMPRESSTION:
+ Bpp_x100 = 100;
+ break;
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ Bpp_x100 = 250;
+ break;
+ case COLOR_CODE_24BIT_YCC422:
+ Bpp_x100 = 300;
+ break;
+ case COLOR_CODE_16BIT_YCC422:
+ Bpp_x100 = 200;
+ break;
+ case COLOR_CODE_30BIT:
+ Bpp_x100 = 375;
+ break;
+ case COLOR_CODE_36BIT:
+ Bpp_x100 = 450;
+ break;
+ case COLOR_CODE_12BIT_YCC420:
+ Bpp_x100 = 150;
+ break;
+ default:
+ DRM_ERROR("invalid color coding");
+ Bpp_x100 = 0;
+ break;
+ }
+
+ return Bpp_x100;
+}
+
+static u8 calc_video_size_step(int coding)
+{
+ u8 video_size_step;
+
+ switch (coding) {
+ case COLOR_CODE_16BIT_CONFIG1:
+ case COLOR_CODE_16BIT_CONFIG2:
+ case COLOR_CODE_16BIT_CONFIG3:
+ case COLOR_CODE_18BIT_CONFIG1:
+ case COLOR_CODE_18BIT_CONFIG2:
+ case COLOR_CODE_24BIT:
+ case COLOR_CODE_COMPRESSTION:
+ return video_size_step = 1;
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ case COLOR_CODE_24BIT_YCC422:
+ case COLOR_CODE_16BIT_YCC422:
+ case COLOR_CODE_30BIT:
+ case COLOR_CODE_36BIT:
+ case COLOR_CODE_12BIT_YCC420:
+ return video_size_step = 2;
+ default:
+ DRM_ERROR("invalid color coding");
+ return 0;
+ }
+}
+
+static u16 round_video_size(int coding, u16 video_size)
+{
+ switch (coding) {
+ case COLOR_CODE_16BIT_YCC422:
+ case COLOR_CODE_24BIT_YCC422:
+ case COLOR_CODE_20BIT_YCC422_LOOSELY:
+ case COLOR_CODE_12BIT_YCC420:
+ /* round up active H pixels to a multiple of 2 */
+ if ((video_size % 2) != 0)
+ video_size += 1;
+ break;
+ default:
+ break;
+ }
+
+ return video_size;
+}
+
+#define SPRD_MIPI_DSI_FMT_DSC 0xff
+static u32 fmt_to_coding(u32 fmt)
+{
+ switch (fmt) {
+ case MIPI_DSI_FMT_RGB565:
+ return COLOR_CODE_16BIT_CONFIG1;
+ case MIPI_DSI_FMT_RGB666:
+ case MIPI_DSI_FMT_RGB666_PACKED:
+ return COLOR_CODE_18BIT_CONFIG1;
+ case MIPI_DSI_FMT_RGB888:
+ return COLOR_CODE_24BIT;
+ case SPRD_MIPI_DSI_FMT_DSC:
+ return COLOR_CODE_COMPRESSTION;
+ default:
+ DRM_ERROR("Unsupported format (%d)\n", fmt);
+ return COLOR_CODE_24BIT;
+ }
+}
+
+#define ns_to_cycle(ns, byte_clk) \
+ DIV_ROUND_UP((ns) * (byte_clk), 1000000)
+
+static void sprd_dsi_init(struct dsi_context *ctx)
+{
+ u16 data_hs2lp, data_lp2hs, clk_hs2lp, clk_lp2hs;
+ u16 max_rd_time;
+ int div;
+
+ dsi_power_enable(ctx, 0);
+ dsi_int0_mask(ctx, 0xffffffff);
+ dsi_int1_mask(ctx, 0xffffffff);
+ dsi_cmd_mode(ctx);
+ dsi_eotp_rx_en(ctx, 0);
+ dsi_eotp_tx_en(ctx, 0);
+ dsi_ecc_rx_en(ctx, 1);
+ dsi_crc_rx_en(ctx, 1);
+ dsi_bta_en(ctx, 1);
+ dsi_video_vcid(ctx, 0);
+ dsi_rx_vcid(ctx, 0);
+
+ div = DIV_ROUND_UP(ctx->byte_clk, ctx->esc_clk);
+ dsi_tx_escape_division(ctx, div);
+
+ max_rd_time = ns_to_cycle(ctx->max_rd_time, ctx->byte_clk);
+ dsi_max_read_time(ctx, max_rd_time);
+
+ data_hs2lp = ns_to_cycle(ctx->data_hs2lp, ctx->byte_clk);
+ data_lp2hs = ns_to_cycle(ctx->data_lp2hs, ctx->byte_clk);
+ clk_hs2lp = ns_to_cycle(ctx->clk_hs2lp, ctx->byte_clk);
+ clk_lp2hs = ns_to_cycle(ctx->clk_lp2hs, ctx->byte_clk);
+ dsi_datalane_hs2lp_config(ctx, data_hs2lp);
+ dsi_datalane_lp2hs_config(ctx, data_lp2hs);
+ dsi_clklane_hs2lp_config(ctx, clk_hs2lp);
+ dsi_clklane_lp2hs_config(ctx, clk_lp2hs);
+
+ dsi_power_enable(ctx, 1);
+}
+
+/*
+ * Free up resources and shutdown host controller and PHY
+ */
+static void sprd_dsi_fini(struct dsi_context *ctx)
+{
+ dsi_int0_mask(ctx, 0xffffffff);
+ dsi_int1_mask(ctx, 0xffffffff);
+ dsi_power_enable(ctx, 0);
+}
+
+/*
+ * If not in burst mode, it will compute the video and null packet sizes
+ * according to necessity.
+ * Configure timers for data lanes and/or clock lane to return to LP when
+ * bandwidth is not filled by data.
+ */
+static int sprd_dsi_dpi_video(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ struct videomode *vm = &ctx->vm;
+ u16 Bpp_x100;
+ u16 video_size;
+ u32 ratio_x1000;
+ u16 null_pkt_size = 0;
+ u8 video_size_step;
+ u32 hs_to;
+ u32 total_bytes;
+ u32 bytes_per_chunk;
+ u32 chunks = 0;
+ u32 bytes_left = 0;
+ u32 chunk_overhead;
+ const u8 pkt_header = 6;
+ u8 coding;
+ int div;
+ u16 hline;
+
+ coding = fmt_to_coding(ctx->format);
+ video_size = round_video_size(coding, vm->hactive);
+ Bpp_x100 = calc_bytes_per_pixel_x100(coding);
+ video_size_step = calc_video_size_step(coding);
+ ratio_x1000 = ctx->byte_clk * 1000 / (vm->pixelclock / 1000);
+ hline = vm->hactive + vm->hsync_len + vm->hfront_porch +
+ vm->hback_porch;
+
+ dsi_power_enable(ctx, 0);
+ dsi_dpi_frame_ack_en(ctx, ctx->frame_ack_en);
+ dsi_dpi_color_coding(ctx, coding);
+ dsi_dpi_video_burst_mode(ctx, ctx->burst_mode);
+ dsi_dpi_sig_delay(ctx, 95 * hline * ratio_x1000 / 100000);
+ dsi_dpi_hline_time(ctx, hline * ratio_x1000 / 1000);
+ dsi_dpi_hsync_time(ctx, vm->hsync_len * ratio_x1000 / 1000);
+ dsi_dpi_hbp_time(ctx, vm->hback_porch * ratio_x1000 / 1000);
+ dsi_dpi_vact(ctx, vm->vactive);
+ dsi_dpi_vfp(ctx, vm->vfront_porch);
+ dsi_dpi_vbp(ctx, vm->vback_porch);
+ dsi_dpi_vsync(ctx, vm->vsync_len);
+ dsi_dpi_hporch_lp_en(ctx, 1);
+ dsi_dpi_vporch_lp_en(ctx, 1);
+
+ hs_to = (hline * vm->vactive) + (2 * Bpp_x100) / 100;
+ for (div = 0x80; (div < hs_to) && (div > 2); div--) {
+ if ((hs_to % div) == 0) {
+ dsi_timeout_clock_division(ctx, div);
+ dsi_lp_rx_timeout(ctx, hs_to / div);
+ dsi_hs_tx_timeout(ctx, hs_to / div);
+ break;
+ }
+ }
+
+ if (ctx->burst_mode == VIDEO_BURST_WITH_SYNC_PULSES) {
+ dsi_dpi_video_packet_size(ctx, video_size);
+ dsi_dpi_null_packet_size(ctx, 0);
+ dsi_dpi_chunk_num(ctx, 0);
+ } else {
+ /* non burst transmission */
+ null_pkt_size = 0;
+
+ /* bytes to be sent - first as one chunk */
+ bytes_per_chunk = vm->hactive * Bpp_x100 / 100 + pkt_header;
+
+ /* hline total bytes from the DPI interface */
+ total_bytes = (vm->hactive + vm->hfront_porch) *
+ ratio_x1000 / ctx->lanes / 1000;
+
+ /* check if the pixels actually fit on the DSI link */
+ if (total_bytes < bytes_per_chunk) {
+ drm_err(dsi->drm, "current resolution can not be set\n");
+ return -EINVAL;
+ }
+
+ chunk_overhead = total_bytes - bytes_per_chunk;
+
+ /* overhead higher than 1 -> enable multi packets */
+ if (chunk_overhead > 1) {
+
+ /* multi packets */
+ for (video_size = video_size_step;
+ video_size < vm->hactive;
+ video_size += video_size_step) {
+
+ if (vm->hactive * 1000 / video_size % 1000)
+ continue;
+
+ chunks = vm->hactive / video_size;
+ bytes_per_chunk = Bpp_x100 * video_size / 100
+ + pkt_header;
+ if (total_bytes >= (bytes_per_chunk * chunks)) {
+ bytes_left = total_bytes -
+ bytes_per_chunk * chunks;
+ break;
+ }
+ }
+
+ /* prevent overflow (unsigned - unsigned) */
+ if (bytes_left > (pkt_header * chunks)) {
+ null_pkt_size = (bytes_left -
+ pkt_header * chunks) / chunks;
+ /* avoid register overflow */
+ if (null_pkt_size > 1023)
+ null_pkt_size = 1023;
+ }
+
+ } else {
+
+ /* single packet */
+ chunks = 1;
+
+ /* must be a multiple of 4 except 18 loosely */
+ for (video_size = vm->hactive;
+ (video_size % video_size_step) != 0;
+ video_size++)
+ ;
+ }
+
+ dsi_dpi_video_packet_size(ctx, video_size);
+ dsi_dpi_null_packet_size(ctx, null_pkt_size);
+ dsi_dpi_chunk_num(ctx, chunks);
+ }
+
+ dsi_int0_mask(ctx, ctx->int0_mask);
+ dsi_int1_mask(ctx, ctx->int1_mask);
+ dsi_power_enable(ctx, 1);
+
+ return 0;
+}
+
+static void sprd_dsi_edpi_video(struct dsi_context *ctx)
+{
+ const u32 fifo_depth = 1096;
+ const u32 word_length = 4;
+ u32 hactive = ctx->vm.hactive;
+ u32 Bpp_x100;
+ u32 max_fifo_len;
+ u8 coding;
+
+ coding = fmt_to_coding(ctx->format);
+ Bpp_x100 = calc_bytes_per_pixel_x100(coding);
+ max_fifo_len = word_length * fifo_depth * 100 / Bpp_x100;
+
+ dsi_power_enable(ctx, 0);
+ dsi_dpi_color_coding(ctx, coding);
+ dsi_tear_effect_ack_en(ctx, ctx->te_ack_en);
+
+ if (max_fifo_len > hactive)
+ dsi_edpi_max_pkt_size(ctx, hactive);
+ else
+ dsi_edpi_max_pkt_size(ctx, max_fifo_len);
+
+ dsi_int0_mask(ctx, ctx->int0_mask);
+ dsi_int1_mask(ctx, ctx->int1_mask);
+ dsi_power_enable(ctx, 1);
+}
+
+/*
+ * Send a packet on the generic interface,
+ * this function has an active delay to wait for the buffer to clear.
+ * The delay is limited to:
+ * (param_length / 4) x DSIH_FIFO_ACTIVE_WAIT x register access time
+ * the controller restricts the sending of.
+ *
+ * This function will not be able to send Null and Blanking packets due to
+ * controller restriction
+ */
+static int sprd_dsi_wr_pkt(struct dsi_context *ctx, u8 vc, u8 type,
+ const u8 *param, u16 len)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ u8 wc_lsbyte, wc_msbyte;
+ u32 payload;
+ int i, j, ret;
+
+ if (vc > 3)
+ return -EINVAL;
+
+
+ /* 1st: for long packet, must config payload first */
+ ret = dsi_wait_tx_payload_fifo_empty(ctx);
+ if (ret) {
+ drm_err(dsi->drm, "tx payload fifo is not empty\n");
+ return ret;
+ }
+
+ if (len > 2) {
+ for (i = 0, j = 0; i < len; i += j) {
+ payload = 0;
+ for (j = 0; (j < 4) && ((j + i) < (len)); j++)
+ payload |= param[i + j] << (j * 8);
+
+ dsi_set_packet_payload(ctx, payload);
+ }
+ wc_lsbyte = len & 0xff;
+ wc_msbyte = len >> 8;
+ } else {
+ wc_lsbyte = (len > 0) ? param[0] : 0;
+ wc_msbyte = (len > 1) ? param[1] : 0;
+ }
+
+ /* 2nd: then set packet header */
+ ret = dsi_wait_tx_cmd_fifo_empty(ctx);
+ if (ret) {
+ drm_err(dsi->drm, "tx cmd fifo is not empty\n");
+ return ret;
+ }
+
+ dsi_set_packet_header(ctx, vc, type, wc_lsbyte, wc_msbyte);
+
+ return 0;
+}
+
+/*
+ * Send READ packet to peripheral using the generic interface,
+ * this will force command mode and stop video mode (because of BTA).
+ *
+ * This function has an active delay to wait for the buffer to clear,
+ * the delay is limited to 2 x DSIH_FIFO_ACTIVE_WAIT
+ * (waiting for command buffer, and waiting for receiving)
+ * @note this function will enable BTA
+ */
+static int sprd_dsi_rd_pkt(struct dsi_context *ctx, u8 vc, u8 type,
+ u8 msb_byte, u8 lsb_byte,
+ u8 *buffer, u8 bytes_to_read)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ int i, ret;
+ int count = 0;
+ u32 temp;
+
+ if (vc > 3)
+ return -EINVAL;
+
+ /* 1st: send read command to peripheral */
+ if (!dsi_is_tx_cmd_fifo_empty(ctx))
+ return -EIO;
+
+ dsi_set_packet_header(ctx, vc, type, lsb_byte, msb_byte);
+
+ /* 2nd: wait peripheral response completed */
+ ret = dsi_wait_rd_resp_completed(ctx);
+ if (ret) {
+ drm_err(dsi->drm, "wait read response time out\n");
+ return ret;
+ }
+
+ /* 3rd: get data from rx payload fifo */
+ if (dsi_is_rx_payload_fifo_empty(ctx)) {
+ drm_err(dsi->drm, "rx payload fifo empty\n");
+ return -EIO;
+ }
+
+ for (i = 0; i < 100; i++) {
+ temp = dsi_get_rx_payload(ctx);
+
+ if (count < bytes_to_read)
+ buffer[count++] = temp & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 8) & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 16) & 0xff;
+ if (count < bytes_to_read)
+ buffer[count++] = (temp >> 24) & 0xff;
+
+ if (dsi_is_rx_payload_fifo_empty(ctx))
+ return count;
+ else {
+ drm_err(dsi->drm, "read too many buffers\n");
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static void sprd_dsi_set_work_mode(struct dsi_context *ctx, u8 mode)
+{
+ if (mode == DSI_MODE_CMD)
+ dsi_cmd_mode(ctx);
+ else
+ dsi_video_mode(ctx);
+}
+
+static void sprd_dsi_lp_cmd_enable(struct dsi_context *ctx, bool enable)
+{
+ if (dsi_is_cmd_mode(ctx))
+ dsi_cmd_mode_lp_cmd_en(ctx, enable);
+ else
+ dsi_video_mode_lp_cmd_en(ctx, enable);
+}
+
+static void sprd_dsi_state_reset(struct dsi_context *ctx)
+{
+ dsi_power_enable(ctx, 0);
+ udelay(100);
+ dsi_power_enable(ctx, 1);
+}
+
+static u32 sprd_dsi_int_status(struct dsi_context *ctx, int index)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ u32 status;
+
+ if (0 == index)
+ status = dsi_int0_status(ctx);
+ else if (1 == index)
+ status = dsi_int1_status(ctx);
+ else {
+ drm_err(dsi->drm, "invalid dsi IRQ index %d\n", index);
+ status = -EINVAL;
+ }
+
+ return status;
+}
+
+static int sprd_dphy_init(struct dsi_context *ctx)
+{
+ struct sprd_dsi *dsi = container_of(ctx, struct sprd_dsi, ctx);
+ int ret;
+
+ dsi_phy_rstz(ctx, 0);
+ dsi_phy_shutdownz(ctx, 0);
+ dsi_phy_clklane_en(ctx, 0);
+
+ dsi_phy_test_clr(ctx, 0);
+ dsi_phy_test_clr(ctx, 1);
+ dsi_phy_test_clr(ctx, 0);
+
+ dphy_pll_config(ctx);
+ dphy_timing_config(ctx);
+
+ dsi_phy_shutdownz(ctx, 1);
+ dsi_phy_rstz(ctx, 1);
+ dsi_phy_stop_wait_time(ctx, 0x1C);
+ dsi_phy_clklane_en(ctx, 1);
+ dsi_phy_datalane_en(ctx);
+
+ ret = dphy_wait_pll_locked(ctx);
+ if (ret) {
+ drm_err(dsi->drm, "dphy initial failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void sprd_dphy_fini(struct dsi_context *ctx)
+{
+ dsi_phy_rstz(ctx, 0);
+ dsi_phy_shutdownz(ctx, 0);
+ dsi_phy_rstz(ctx, 1);
+}
+
+static void sprd_dsi_encoder_enable(struct drm_encoder *encoder)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+ struct sprd_dpu *dpu = to_sprd_crtc(encoder->crtc);
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (ctx->enabled) {
+ drm_warn(dsi->drm, "dsi is initialized\n");
+ return;
+ }
+
+ sprd_dsi_init(ctx);
+ if (ctx->work_mode == DSI_MODE_VIDEO)
+ sprd_dsi_dpi_video(ctx);
+ else
+ sprd_dsi_edpi_video(ctx);
+
+ sprd_dphy_init(ctx);
+
+ sprd_dsi_lp_cmd_enable(ctx, true);
+
+ if (dsi->panel) {
+ drm_panel_prepare(dsi->panel);
+ drm_panel_enable(dsi->panel);
+ }
+
+ sprd_dsi_set_work_mode(ctx, ctx->work_mode);
+ sprd_dsi_state_reset(ctx);
+
+ if (ctx->nc_clk_en)
+ dsi_nc_clk_en(ctx, true);
+ else {
+ dsi_phy_clk_hs_rqst(ctx, true);
+ dphy_wait_pll_locked(ctx);
+ }
+
+ sprd_dpu_run(dpu);
+
+ ctx->enabled = true;
+}
+
+static void sprd_dsi_encoder_disable(struct drm_encoder *encoder)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+ struct sprd_dpu *dpu = to_sprd_crtc(encoder->crtc);
+ struct dsi_context *ctx = &dsi->ctx;
+
+ if (!ctx->enabled) {
+ drm_warn(dsi->drm, "dsi isn't initialized\n");
+ return;
+ }
+
+ sprd_dpu_stop(dpu);
+ sprd_dsi_set_work_mode(ctx, DSI_MODE_CMD);
+ sprd_dsi_lp_cmd_enable(ctx, true);
+
+ if (dsi->panel) {
+ drm_panel_disable(dsi->panel);
+ drm_panel_unprepare(dsi->panel);
+ }
+
+ sprd_dphy_fini(ctx);
+ sprd_dsi_fini(ctx);
+
+ ctx->enabled = false;
+}
+
+static void sprd_dsi_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+ struct sprd_dsi *dsi = encoder_to_dsi(encoder);
+
+ drm_dbg(dsi->drm, "%s() set mode: %s\n", __func__, dsi->mode->name);
+}
+
+static int sprd_dsi_encoder_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ return 0;
+}
+
+static const struct drm_encoder_helper_funcs sprd_encoder_helper_funcs = {
+ .atomic_check = sprd_dsi_encoder_atomic_check,
+ .mode_set = sprd_dsi_encoder_mode_set,
+ .enable = sprd_dsi_encoder_enable,
+ .disable = sprd_dsi_encoder_disable
+};
+
+static const struct drm_encoder_funcs sprd_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int sprd_dsi_encoder_init(struct drm_device *drm,
+ struct sprd_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct device *dev = dsi->host.dev;
+ u32 crtc_mask;
+ int ret;
+
+ crtc_mask = drm_of_find_possible_crtcs(drm, dev->of_node);
+ if (!crtc_mask) {
+ drm_err(drm, "failed to find crtc mask\n");
+ return -EINVAL;
+ }
+
+ drm_dbg(dsi->drm, "find possible crtcs: 0x%08x\n", crtc_mask);
+
+ encoder->possible_crtcs = crtc_mask;
+ ret = drm_encoder_init(drm, encoder, &sprd_encoder_funcs,
+ DRM_MODE_ENCODER_DSI, NULL);
+ if (ret) {
+ drm_err(drm, "failed to init dsi encoder\n");
+ return ret;
+ }
+
+ drm_encoder_helper_add(encoder, &sprd_encoder_helper_funcs);
+
+ return 0;
+}
+
+static int sprd_dsi_find_panel(struct sprd_dsi *dsi)
+{
+ struct device *dev = dsi->host.dev;
+ struct device_node *child, *lcds_node;
+ struct drm_panel *panel;
+
+ /* search /lcds child node first */
+ lcds_node = of_find_node_by_path("/lcds");
+ for_each_child_of_node(lcds_node, child) {
+ panel = of_drm_find_panel(child);
+ if (!IS_ERR(panel)) {
+ dsi->panel = panel;
+ return 0;
+ }
+ }
+
+ /*
+ * If /lcds child node search failed, we search
+ * the child of dsi host node.
+ */
+ for_each_child_of_node(dev->of_node, child) {
+ panel = of_drm_find_panel(child);
+ if (!IS_ERR(panel)) {
+ dsi->panel = panel;
+ return 0;
+ }
+ }
+
+ drm_err(dsi->drm, "of_drm_find_panel() failed\n");
+ return -ENODEV;
+}
+
+static int sprd_dsi_host_attach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *slave)
+{
+ struct sprd_dsi *dsi = host_to_dsi(host);
+ struct dsi_context *ctx = &dsi->ctx;
+ int ret;
+
+ dsi->slave = slave;
+ ctx->lanes = slave->lanes;
+ ctx->format = slave->format;
+ ctx->byte_clk = slave->hs_rate / 8;
+ ctx->esc_clk = slave->lp_rate;
+
+ if (slave->mode_flags & MIPI_DSI_MODE_VIDEO)
+ ctx->work_mode = DSI_MODE_VIDEO;
+ else
+ ctx->work_mode = DSI_MODE_CMD;
+
+ if (slave->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
+ ctx->burst_mode = VIDEO_BURST_WITH_SYNC_PULSES;
+ else if (slave->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
+ ctx->burst_mode = VIDEO_NON_BURST_WITH_SYNC_PULSES;
+ else
+ ctx->burst_mode = VIDEO_NON_BURST_WITH_SYNC_EVENTS;
+
+ if (slave->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)
+ ctx->nc_clk_en = true;
+
+ ret = sprd_dsi_find_panel(dsi);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int sprd_dsi_host_detach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *slave)
+{
+ /* do nothing */
+ return 0;
+}
+
+static ssize_t sprd_dsi_host_transfer(struct mipi_dsi_host *host,
+ const struct mipi_dsi_msg *msg)
+{
+ struct sprd_dsi *dsi = host_to_dsi(host);
+ const u8 *tx_buf = msg->tx_buf;
+
+ if (msg->rx_buf && msg->rx_len) {
+ u8 lsb = (msg->tx_len > 0) ? tx_buf[0] : 0;
+ u8 msb = (msg->tx_len > 1) ? tx_buf[1] : 0;
+
+ return sprd_dsi_rd_pkt(&dsi->ctx, msg->channel, msg->type,
+ msb, lsb, msg->rx_buf, msg->rx_len);
+ }
+
+ if (msg->tx_buf && msg->tx_len)
+ return sprd_dsi_wr_pkt(&dsi->ctx, msg->channel, msg->type,
+ tx_buf, msg->tx_len);
+
+ return 0;
+}
+
+static const struct mipi_dsi_host_ops sprd_dsi_host_ops = {
+ .attach = sprd_dsi_host_attach,
+ .detach = sprd_dsi_host_detach,
+ .transfer = sprd_dsi_host_transfer,
+};
+
+static int sprd_dsi_host_init(struct sprd_dsi *dsi, struct device *dev)
+{
+ int ret;
+
+ dsi->host.dev = dev;
+ dsi->host.ops = &sprd_dsi_host_ops;
+
+ ret = mipi_dsi_host_register(&dsi->host);
+ if (ret)
+ drm_err(dsi->drm, "failed to register dsi host\n");
+
+ return ret;
+}
+
+static int sprd_dsi_connector_get_modes(struct drm_connector *connector)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ return drm_panel_get_modes(dsi->panel, connector);
+}
+
+static enum drm_mode_status
+sprd_dsi_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ drm_dbg(dsi->drm, "%s() mode: "DRM_MODE_FMT"\n", __func__, DRM_MODE_ARG(mode));
+
+ if (mode->type & DRM_MODE_TYPE_PREFERRED) {
+ dsi->mode = mode;
+ drm_display_mode_to_videomode(dsi->mode, &dsi->ctx.vm);
+ }
+
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+sprd_dsi_connector_best_encoder(struct drm_connector *connector)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ return &dsi->encoder;
+}
+
+static struct drm_connector_helper_funcs sprd_dsi_connector_helper_funcs = {
+ .get_modes = sprd_dsi_connector_get_modes,
+ .mode_valid = sprd_dsi_connector_mode_valid,
+ .best_encoder = sprd_dsi_connector_best_encoder,
+};
+
+static enum drm_connector_status
+sprd_dsi_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct sprd_dsi *dsi = connector_to_dsi(connector);
+
+ if (dsi->panel) {
+ drm_panel_add(dsi->panel);
+ return connector_status_connected;
+ }
+
+ return connector_status_disconnected;
+}
+
+static void sprd_dsi_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_unregister(connector);
+ drm_connector_cleanup(connector);
+}
+
+static const struct drm_connector_funcs sprd_dsi_atomic_connector_funcs = {
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = sprd_dsi_connector_detect,
+ .destroy = sprd_dsi_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int sprd_dsi_connector_init(struct drm_device *drm, struct sprd_dsi *dsi)
+{
+ struct drm_encoder *encoder = &dsi->encoder;
+ struct drm_connector *connector = &dsi->connector;
+ int ret;
+
+ connector->polled = DRM_CONNECTOR_POLL_HPD;
+
+ ret = drm_connector_init(drm, connector,
+ &sprd_dsi_atomic_connector_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ if (ret) {
+ drm_err(drm, "drm_connector_init() failed\n");
+ return ret;
+ }
+
+ drm_connector_helper_add(connector,
+ &sprd_dsi_connector_helper_funcs);
+
+ drm_connector_attach_encoder(connector, encoder);
+
+ return 0;
+}
+
+static irqreturn_t sprd_dsi_isr(int irq, void *data)
+{
+ struct sprd_dsi *dsi = data;
+ u32 status = 0;
+
+ if (dsi->ctx.irq0 == irq)
+ status = sprd_dsi_int_status(&dsi->ctx, 0);
+ else if (dsi->ctx.irq1 == irq)
+ status = sprd_dsi_int_status(&dsi->ctx, 1);
+
+ if (status & DSI_INT_STS_NEED_SOFT_RESET)
+ sprd_dsi_state_reset(&dsi->ctx);
+
+ return IRQ_HANDLED;
+}
+
+static int sprd_dsi_bind(struct device *dev, struct device *master, void *data)
+{
+ struct drm_device *drm = data;
+ struct sprd_dsi *dsi = dev_get_drvdata(dev);
+ int ret;
+
+ ret = sprd_dsi_encoder_init(drm, dsi);
+ if (ret)
+ goto cleanup_host;
+
+ ret = sprd_dsi_connector_init(drm, dsi);
+ if (ret)
+ goto cleanup_encoder;
+
+ dsi->drm = drm;
+
+ return 0;
+
+cleanup_encoder:
+ drm_encoder_cleanup(&dsi->encoder);
+cleanup_host:
+ mipi_dsi_host_unregister(&dsi->host);
+ return ret;
+}
+
+static void sprd_dsi_unbind(struct device *dev,
+ struct device *master, void *data)
+{
+ struct drm_device *drm = data;
+
+ /* do nothing */
+ drm_dbg(drm, "%s()\n", __func__);
+
+}
+
+static const struct component_ops dsi_component_ops = {
+ .bind = sprd_dsi_bind,
+ .unbind = sprd_dsi_unbind,
+};
+
+static int sprd_dsi_context_init(struct sprd_dsi *dsi,
+ struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct dsi_context *ctx = &dsi->ctx;
+ struct resource *res;
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ctx->base = devm_ioremap(dev, res->start, resource_size(res));
+ if (!ctx->base) {
+ drm_err(dsi->drm, "failed to map dsi host registers\n");
+ return -ENXIO;
+ }
+
+ ctx->pll = devm_kzalloc(dev, sizeof(*ctx->pll), GFP_KERNEL);
+ if (!ctx->pll) {
+ drm_err(dsi->drm, "failed to allocate dphy pll data.\n");
+ return -ENOMEM;
+ }
+
+ ctx->regmap = devm_regmap_init(dev, &regmap_tst_io, dsi, &byte_config);
+ if (IS_ERR(ctx->regmap)) {
+ drm_err(dsi->drm, "dphy regmap init failed\n");
+ return PTR_ERR(ctx->regmap);
+ }
+
+ ctx->irq0 = platform_get_irq(pdev, 0);
+ if (ctx->irq0 > 0) {
+ ret = request_irq(ctx->irq0, sprd_dsi_isr, 0, "DSI_INT0", dsi);
+ if (ret) {
+ drm_err(dsi->drm, "failed to request dsi irq int0!\n");
+ return -EINVAL;
+ }
+ }
+
+ ctx->irq1 = platform_get_irq(pdev, 1);
+ if (ctx->irq1 > 0) {
+ ret = request_irq(ctx->irq1, sprd_dsi_isr, 0, "DSI_INT1", dsi);
+ if (ret) {
+ drm_err(dsi->drm, "failed to request dsi irq int1!\n");
+ return -EINVAL;
+ }
+ }
+
+ ctx->data_hs2lp = 120;
+ ctx->data_lp2hs = 500;
+ ctx->clk_hs2lp = 4;
+ ctx->clk_lp2hs = 15;
+ ctx->max_rd_time = 6000;
+ ctx->int0_mask = 0xffffffff;
+ ctx->int1_mask = 0xffffffff;
+
+ dsi->ctx.enabled = true;
+
+ return 0;
+}
+
+static const struct of_device_id dsi_match_table[] = {
+ { .compatible = "sprd,sharkl3-dsi-host" },
+ { /* sentinel */ },
+};
+
+static int sprd_dsi_probe(struct platform_device *pdev)
+{
+ struct sprd_dsi *dsi;
+ int ret;
+
+ dsi = kzalloc(sizeof(*dsi), GFP_KERNEL);
+ if (!dsi) {
+ dev_err(&pdev->dev, "failed to allocate dsi data.\n");
+ return -ENOMEM;
+ }
+
+ dsi->dev = &pdev->dev;
+
+ ret = sprd_dsi_context_init(dsi, &pdev->dev);
+ if (ret)
+ goto err;
+
+ ret = sprd_dsi_host_init(dsi, &pdev->dev);
+ if (ret)
+ goto err;
+
+ platform_set_drvdata(pdev, dsi);
+
+ return component_add(&pdev->dev, &dsi_component_ops);
+
+err:
+ kfree(dsi);
+ return ret;
+}
+
+static int sprd_dsi_remove(struct platform_device *pdev)
+{
+ struct sprd_dsi *dsi = platform_get_drvdata(pdev);
+
+ component_del(&pdev->dev, &dsi_component_ops);
+
+ kfree(dsi);
+ return 0;
+}
+
+struct platform_driver sprd_dsi_driver = {
+ .probe = sprd_dsi_probe,
+ .remove = sprd_dsi_remove,
+ .driver = {
+ .name = "sprd-dsi-drv",
+ .of_match_table = dsi_match_table,
+ },
+};
+
+MODULE_AUTHOR("Leon He <leon.he@unisoc.com>");
+MODULE_AUTHOR("Kevin Tang <kevin.tang@unisoc.com>");
+MODULE_DESCRIPTION("Unisoc MIPI DSI HOST Controller Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.h b/drivers/gpu/drm/sprd/sprd_dsi.h
new file mode 100644
index 0000000..e07cd12
--- /dev/null
+++ b/drivers/gpu/drm/sprd/sprd_dsi.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Unisoc Inc.
+ */
+
+#ifndef __SPRD_DSI_H__
+#define __SPRD_DSI_H__
+
+#include <linux/of.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+#include <video/videomode.h>
+
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_print.h>
+#include <drm/drm_panel.h>
+
+#include "megacores_pll.h"
+
+#define DSI_INT_STS_NEED_SOFT_RESET BIT(0)
+#define DSI_INT_STS_NEED_HARD_RESET BIT(1)
+
+enum dsi_work_mode {
+ DSI_MODE_CMD = 0,
+ DSI_MODE_VIDEO
+};
+
+enum video_burst_mode {
+ VIDEO_NON_BURST_WITH_SYNC_PULSES = 0,
+ VIDEO_NON_BURST_WITH_SYNC_EVENTS,
+ VIDEO_BURST_WITH_SYNC_PULSES
+};
+
+enum dsi_color_coding {
+ COLOR_CODE_16BIT_CONFIG1 = 0,
+ COLOR_CODE_16BIT_CONFIG2,
+ COLOR_CODE_16BIT_CONFIG3,
+ COLOR_CODE_18BIT_CONFIG1,
+ COLOR_CODE_18BIT_CONFIG2,
+ COLOR_CODE_24BIT,
+ COLOR_CODE_20BIT_YCC422_LOOSELY,
+ COLOR_CODE_24BIT_YCC422,
+ COLOR_CODE_16BIT_YCC422,
+ COLOR_CODE_30BIT,
+ COLOR_CODE_36BIT,
+ COLOR_CODE_12BIT_YCC420,
+ COLOR_CODE_COMPRESSTION,
+ COLOR_CODE_MAX
+};
+
+struct dsi_context {
+ void __iomem *base;
+ struct regmap *regmap;
+ struct dphy_pll *pll;
+ struct videomode vm;
+ bool enabled;
+
+ u8 lanes;
+ u32 format;
+ u8 work_mode;
+ u8 burst_mode;
+
+ int irq0;
+ int irq1;
+ u32 int0_mask;
+ u32 int1_mask;
+
+ /* byte clock [KHz] */
+ u32 byte_clk;
+ /* escape clock [KHz] */
+ u32 esc_clk;
+ /* maximum time (ns) for data lanes from HS to LP */
+ u16 data_hs2lp;
+ /* maximum time (ns) for data lanes from LP to HS */
+ u16 data_lp2hs;
+ /* maximum time (ns) for clk lanes from HS to LP */
+ u16 clk_hs2lp;
+ /* maximum time (ns) for clk lanes from LP to HS */
+ u16 clk_lp2hs;
+ /* maximum time (ns) for BTA operation - REQUIRED */
+ u16 max_rd_time;
+ /* is 18-bit loosely packets (valid only when BPP == 18) */
+ bool is_18_loosely;
+ /* enable receiving frame ack packets - for video mode */
+ bool frame_ack_en;
+ /* enable receiving tear effect ack packets - for cmd mode */
+ bool te_ack_en;
+ /* enable non coninuous clock for energy saving */
+ bool nc_clk_en;
+};
+
+struct sprd_dsi {
+ struct device *dev;
+ struct drm_device *drm;
+ struct mipi_dsi_host host;
+ struct mipi_dsi_device *slave;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+ struct drm_panel *panel;
+ struct drm_display_mode *mode;
+ struct dsi_context ctx;
+};
+
+#endif /* __SPRD_DSI_H__ */
--
2.7.4